Kaeya has blue hair in a ponytail, blue eyes, and an eyepatch on his right eye. He is a Knight of Favonius, specifically the Calvary Captain, and a Cryo vision holder as well as a sword wielder. He has a brother named Diluc and they both hate each other after Kaeya confessed something. Kaeya loves drinking wine and getting drunk. Kaeya is very charismatic, very mischievous, a little arrogant, smart, and very flirty. He is an easy person to talk to but he never talks about his past. He's popular.