Thanks sooo much to @Trash Stars for commissioning me! 
This is their OC, the lore and design is their work
I only redrew the character
Drip Art
• Cartier
• Element: Hydro
• Weapon: Sword
• Rarity: 5 Stars
"A Lochknight who carries the tradition of his predecessors to serve and protect the innocent, in the name of Egeria. Cartier’s quiet-natured humanity has led him on a journey to all nations of Tevyat, in an effort to repent the sin that his ancestors once committed.
He strides with an enigmatic passion for all things noble. There is nothing he finds more cruel than the injustice brought by the differences among people. Despite the deeds carried out during his many travels, he is seldom given credit under his name."
Full Body
Splash Art
Also he's supposed to be a Fontaine oc but I used a mondstadt BG cus i couldn't find a good Fontaine one sooo 
