Overview
@SparxiConOfficial is the first Boss Enemy encountered in Planarcadia, introduced in Honkai: Star Rail Version 4.0: No Aha at Full Moon. Lore wise, she's the form that the imagenae Sparxie takes after wearing her Supplicant Mask in order to challenge The Trailblazer and Himeko. As a Boss Enemy, she appears randomly in end-game content, so it's important to always be aware on how to deal with her. While the fight does go smoother with Elation units, there are some workarounds and I'll be giving you a few team ideas to help understand the battle. The fight consists of three enemies: @SparxiConOfficial, Output Port 1 and Output Port 2. In addition to this, she can summon Aggressive Reading Material and Live Stream Assistants.
She is considered an Imagenae Enemy, and is the Boss Enemy counterpart of playable Characters Sparkle and Sparxie. She could also be considered the Boss Enemy equivalent of the Sparxie-themed Aggressive Reading Material. The Apocalyptic Shadow counterpart of this boss is the Super Idol: Center of Attention.
If you enjoyed the guide or found it useful, don't forget to leave a comment and a like! If you have any further questions about the boss or HSR in general, I'll be quick to answer!
UPDATE HISTORY:
2026/04/26: Guide Released.
2026/04/27: Added Achievement Info, added Apocalyptic Shadow Info, changed layout of certain sections for ease of viewing.
Data Bank Bio
@SparxiConOfficial:
"Planarcadia's trending streamer Sparxie is going live! Tonight, witness the SparxiCon where she'll unveil her brand-new image to her devoted fans!"
Output Port 1:
"The output screen used by Sparxie during her live stream. You can check important information like popularity ratings, comments, and donations here."
"Tap the screen to join the interactive session!"
Output Port 2:
"The output screen used by Sparxie during her live stream. You can check important information like popularity ratings, comments, and donations here."
"Tap the screen to join the interactive session!"
Aggressive Reading Material:
"As the saying goes, "Buying books is like a landslide; reading them is like spinning silk." Bibliophiles are always buying new volumes yet rarely crack them open."
"The guilt of having "so much unread" and the self-deception that "I'll get to it someday" have woven together to create a vicious imagenae known as "Aggressive Reading Material."
Live Stream Assistant:
"Sparxie's streaming assistant."
"Helps manage the stream and isn't afraid to take on haters directly. Dedicated to the job and quite a handful to deal with."
Rocking Rebel (Apocalyptic Shadow ONLY)
"A die-hard rock music fan. In pursuit of his musical dreams, he ventured down a dark path. But at the end of the day, he's still just a fan.
Hates "bassist jokes" with a passion.
Some third-rate media outlets speculated that "the bass is his true form" based on his design, but that's pure rumor... the bass is actually being coerced."
@SparxiConOfficial in the Data Bank.
Battle Notes: Live Showdown
Silver Wolf Lv.999 in a Live Showdown. Please ignore my team I promise I know how to play!
Live Showdown is a unique state where one of your Characters is taken into a sub-field where they must fight various adds while the rest of your team provides support in the prime-field. Any Elation skills will always damage enemies in their respective field with the sole exception of Aha Instant, which allows all Elation attacks to hit Enemies on the sub-field. While this status is active, a Live Showdown countdown will appear in the action order.
In the prime-field, the Output Port 1 and Output Port 2 will take different forms. Attack them during these forms to buff your Character or nerf @SparxiConOfficial's team respectively.
Live Showdown ends when the sub-field Character is downed, the sub-field Enemies are defeated, or the Live Showdown countdown in the Action Order ends. Your goal is to clear this as quickly as possible to debuff @SparxiConOfficial and deal extra DMG.
Battle Notes: Party Composition
As fun as this fight is, Live Showdown can and will ruin you if you don't have the right party members. Fortunately, there's a good few ways to blitz through @SparxiConOfficial's hardest sections and breeze through the battle with even underleveled teams.
Aside from the Aggressive Reading Material, all enemies in this battle are weak to Quantum DMG and Imaginary DMG. In addition to this, @SparxiConOfficial, the Live Stream Assistant and the Aggressive Reading Material are all weak to Fire DMG. As such, using teams containing these elements may help you during battle.
For F2P units, The Trailblazer (Harmony), Yukong and March 7th (Hunt) can take advantage of Imaginary DMG, while Qingque, Lynx and Xueyi can take advantage of Quantum DMG. March 7th (Hunt) is a decent DPS while Lynx is an excellent healer if built correctly, so these are the two main units I would go for if you don't have any alternatives. Characters who can hit multiple units for Fire DMG, such as Asta or The Trailblazer (Preservation) are also helpful during Live Showdown, so I'd probably recommend Preservation over Harmony for The Trailblazer overall.
For other units, Elation is your best bet, as you'll soon learn for Planarcadia. The Trailblazer (Elation) is decent to help your allies gain Punchline if F2P and Silver Wolf Lv.999 and Sparxie are definitely the two key players against @SparxiConOfficial, absolutely shredding her HP in the right situations. If you don't want to use / have any Elation units, powerful or well-built Characters that hit multiple enemies such as Firefly, Castorice, Welt or Himeko are useful, especially since they can hit most Enemies' weakness. This fight is pretty simple overall, so there isn't too much to go over when it comes to team comps.
Weakness lists are as follows:
@SparxiConOfficial: Fire, Quantum, Imaginary
Output Port 1: Wind, Quantum, Imaginary
Output Port 2: Wind, Quantum, Imaginary
Aggressive Reading Material: Physical, Fire, Lightning
Live Stream Assistant: Fire, Quantum, Imaginary
Example team comps include:
F2P: March 7th (Hunt), The Trailblazer (Preservation), Lynx, Asta
Remembrance AoE: Castorice, Cyrene, ANY, Hyacine
Elation DMG: Silver Wolf Lv.999, Sparxie, Yao Guang, ANY
Budget AoE: Welt, Himeko, The Trailblazer (Preservation), Lynx
Budget Hunt: March 7th (Hunt), Gepard, Bailu, Bronya
...ok, that one might just be random units slapped together, but you get the idea.
Moveset: @SparxiConOfficial (Phase 1)
@SparxiConOfficial's appearance in combat.
Net Battle! | Deals 350% ATK Quantum DMG to one Character.
Bring the Beat In! | Deals 350% ATK Quantum DMG to all Characters.
Stream Promo | Applies Flooding Viewers to Output Port 1 and Output Port 2.
- Flooding Viewers: Increases action advancement and CRIT Rate by 25%.
Get On the Mic! | Triggers Live Showdown. While Live Showdown is active, forces the player to choose one Character to be sent to the sub-field where they must fight three Aggressive Reading Materials. Characters can only attack Enemies in their respective field (with the exception of Elation DMG, which can be used against Enemies in the sub-field no matter the position of the Character as long as Aha Instant is active). Live Showdown lasts until all units on one side are defeated in the sub-field or the Live Showdown status ends.
Friendship Level Adjustment | Output Port 1 and Output Port 2 will change form for as long as Live Showdown is active, gaining the Ally Popularity and Enemy Popularity buffs respectively. If Output Port 1 is attacked, applies Ally Gratuity to the Character in the sub-field. If Output Port 2 is attacked, applies Enemy Gratuity to all enemies in the sub-field.
- Ally Gratuity: Increases All-Type RES PEN by a certain amount. advances action of Output Port 1 by 100%.
- Enemy Gratuity: Increases DMG dealt by this unit by a 10%. Advances action of Output Port 2 by 100%.
Fan Frenzy | As long as Live Showdown is active @SparxiConLive, Output Port 1 and Output Port 2 will recieve reduced DMG and become immune to Crowd Control debuffs. If Live Showdown is not dispelled by defeating all Enemies in the sub-field, this effect will be weakened but not removed. If @SparxiConOfficial has reached 75% HP without triggering Live Showdown, her action advances.
Commence Chat Bombing! | If all Enemies are not defeated in the sub-field by the time Live Showdown is dispelled, deals 600% ATK Quantum DMG to all Characters entering the sub-field and inflicts Entanglement. If all Enemies in the sub-field are defeated, applies Tilted to all Enemies in the prime-field and grants an extra turn to Aha with a fixed 20 Punchline.
- Tilted: Increase DMG taken by this unit by 100%.
Moveset: @SparxiConOfficial (Phase 2)
Net Battle! | Deals 350% ATK Quantum DMG to one Character.
Bring the Beat In! | Deals 350% ATK Quantum DMG to all Characters.
Stream Promo | Applies Flooding Viewers to Output Port 1 and Output Port 2.
- Flooding Viewers: Increases action advancement and CRIT Rate by 25%.
Get On the Mic! | Triggers Live Showdown. While Live Showdown is active, forces the player to choose one Character to be sent to the sub-field where they must fight two Aggressive Reading Materials and one Live Stream Assistant. Characters can only attack Enemies in their respective field (with the exception of Elation DMG, which can be used against Enemies in the sub-field no matter the position of the Character as long as Aha Instant is active). Live Showdown lasts until all units on one side are defeated in the sub-field or the Live Showdown status ends.
Friendship Level Adjustment | Output Port 1 and Output Port 2 will change form for as long as Live Showdown is active, gaining the Ally Popularity and Enemy Popularity buffs respectively. If Output Port 1 is attacked, applies Ally Gratuity to the Character in the sub-field. If Output Port 2 is attacked, applies Enemy Gratuity to all enemies in the sub-field.
- Ally Gratuity: Increases All-Type RES PEN by 5%. advances action of Output Port 1 by 100%.
- Enemy Gratuity: Increases DMG dealt by this unit by 10%. Advances action of Output Port 2 by 100%.
Fan Frenzy | As long as Live Showdown is active @SparxiConLive, Output Port 1 and Output Port 2 will recieve reduced DMG and become immune to Crowd Control debuffs. If Live Showdown is not dispelled by defeating all Enemies in the sub-field, this effect will be weakened but not removed. If @SparxiConOfficial has reached 75% HP without triggering Live Showdown, her action advances.
Commence Chat Bombing! | If all Enemies are not defeated in the sub-field by the time Live Showdown is dispelled, deals 600% ATK Quantum DMG to all Characters entering the sub-field and inflicts Entanglement. If all Enemies in the sub-field are defeated, applies Tilted to all Enemies in the prime-field and grants an extra turn to Aha with a fixed 20 Punchline.
- Tilted: Increase DMG taken by this unit by 100%.
Bullet Comments Ready! | If all Enemies are not defeated in the sub-field by the time Live Showdown is dispelled, deals 1200% ATK Quantum DMG to all Characters, with an increased amount of DMG the more HP the Enemies in the sub-field had. Additionally, carries a chance to inflict ATK Reduction, DEF Reduction, Weaken or Entanglement to any Characters hit.
Moveset: Output Port 1
Output Port 1's appearance in combat.
Follower Growth | If attacked while applied with Ally Popularity, applies Ally Gratuity to all Characters in the sub-field.
Moveset: Output Port 2
Output Port 2's appearance in combat.
Bleeding Followers | If attacked while applied with Enemy Popularity, applies Enemy Gratuity to all Enemies in the sub-field.
Moveset: Aggressive Reading Material
Aggressive Reading Material's appearance in combat. Note the different attire.
Curse of Knowledge | Throughout the battle, Aggressive Reading Material will always be applied with Book-Smart. Book-Smart will be dispelled upon being damaged by Elation DMG or the team receives 20 Punchline.
- Book Smart: Aggressive Reading Material takes 50% less DMG and deals 50% more DMG.
Read or Die! | Aggressive Reading Material deals 250% ATK Physical DMG to one Character.
Moveset: Live Stream Assistant
Live Stream Assistant during combat. Technically, she's also considered a Boss Enemy.
Net Battle! | Live Stream Assistant deals 350% ATK Quantum DMG to one Character.
Bring the Beat In! | Live Stream Assistant deals 350% ATK Quantum DMG to all Characters.
Achievements
The player can earn two achievements during the battle against @SparxiConOfficial, both of which are dependent on how well you perform during her Live Performances:
- Win-Win Means Winning Twice | Win the "Live Showdown" in both phases during the battle against @SparxiConOfficial
- Lose the "Live Showdown" in both phases during the battle against @SparxiConOfficial
Apocalyptic Shadow: Overview
Super Idol: Center of Attention in the Apocalyptic Shadow menu.
Occasionally, a counterpart of @SparxiConOfficial called the Super Idol: Center of Attention will appear as a Boss Enemy in the Apocalyptic Shadow. This version has a different moveset and different summons, making the fight a little bit harder when compared to her standard counterpart.
Apocalyptic Shadow: New Moves (Phase 1)
Super Idol: Center of Attention's appearance in battle.
Dedicated Streamer | Super Idol: Center of Attention will apply Toughness Lock to herself at the beginning of the battle. Toughness Lock is dispelled upon the removal of Live Showdown and is reapplied when Live Showdown begins.
- Toughness Lock | Super Idol: Center of Attention's Toughness cannot be reduced to any value below 1.
Apocalyptic Shadow: New Moves (Phase 2)
Dedicated Streamer | Super Idol: Center of Attention will apply Toughness Lock to herself at the beginning of the battle. Toughness Lock is dispelled upon the removal of Live Showdown and is reapplied when Live Showdown begins.
- Toughness Lock | Super Idol: Center of Attention's Toughness cannot be reduced to any value below 1.
Super Idol | Super Idol: Center of Attention will reset Ally Popularity and Enemy Popularity at the start of her turn. When Ally Popularity reaches its maximum value or Enemy Popularity reaches its minimum value, all Enemies within the Live Showdown sub-field will lose 15% Max HP and Aha will gain 5 Punchline. When all Enemies are defeated within the Live Showdown sub-field Super Idol: Center of Attention will lose 10% Max HP and 200 Toughness.
Get On the Mic! | Super Idol: Center of Attention triggers Live Showdown. While Live Showdown is active, forces the player to choose one Character to be sent to the sub-field where they must fight two Rocking Rebels and one Live Stream Assistant. Characters can only attack Enemies in their respective field (with the exception of Elation DMG, which can be used against Enemies in the sub-field no matter the position of the Character as long as Aha Instant is active). Live Showdown lasts until all units on one side are defeated in the sub-field or the Live Showdown status ends.
Apocalyptic Shadow: Rocking Rebel
A Rocking Rebel's appearance in battle.
Sweep the Left! | Rocking Rebel will use a sweeping attack on three Characters, starting from the leftmost Character in the Team, dealing 280% ATK Imaginary DMG.
Sweep the Right! | Rocking Rebel will use a sweeping attack on three Characters, starting from the rightmost Character in the Team, dealing 280% ATK Imaginary DMG.
Performance Rehearsal | Rocking Rebel will apply Charging to himself. On his next turn, Rocking Rebel will use Time to Rock!.
- Charging | If Rocking Rebel's weakness is broken or Aha Instant is triggered, Rocking Rebel will take 40% increased DMG and Aha will gain 10 Punchline.
Get Hyped! | Rocking Rebel will increase the SPD of all enemies by 50%. If Rocking Rebel is affected with Frenzied Rendition, all Enemies except for Rocking Rebel will lose 40 Toughness and 10% of Rocking Rebel's Max HP. Additionally, each enemy has a chance to be afflicted with Revelry and Aha will gain 10 Punchline.
- Revelry | This unit cannot take action. If Rocking Rebel is not affected by Charging, Rocking Rebel will either use Sweep the Left! or Sweep the Right!.
Music Madness | If Aha uses Aha Instant, Rocking Rebel will be afflicted with Frenzied Rendition.
- Frenzied Rendition | The effects of Get Hyped! are changed when used by Rocking Rebel.
Time to Rock! | Rocking Rebel deals 500% ATK Imaginary DMG to all Characters.
Writer's Notes / Question of the Day!
So far, I've been loving Planarcadia and have already grinded out every single chest and mission added since 4.0. At the minute, I'm currently farming for Jades in the Simulated Universe - gotta get SW999 up to speed, after all!
The questline for Planarcadia has been much better than I expected and has completely gotten rid of my worries that we'd see a rehash of Penacony. Sparxie's arc was a great mix between comedic and serious, and given the recent story revelations in 4.2 (alongside a BRILLIANT side mission that essentially acts as Silver Wolf Lv. 999's Companion Mission), I am very much looking forward to the future of Planarcadia (as well as the new music, given how much of a BOP Perfect Idol is)! I hope you've all enjoyed the guide and have a happy third anniversary!
I hope you enjoyed the guide, Gray Hair!
Gallery
Output Port 1 under the effects of Ally Popularity.
Output Port 2 under the effects of Enemy Popularity.
Official Artwork of @SparxiConOfficial
Render of Output Port 1
Render of Output Port 2
Render of Aggressive Reading Material. Note the missing rabbit mask.
Render of Live Stream Assistant
Render of Rocking Rebel
