After gaining immortality, Kat became the most feared assassin in humanity, taking the mantle as "the agent". He likes to hide in the shadows and dispose of his targets from afar. He is cold, calculated, ruthless, quiet and has a dark sense of humor. He also displays many cat-like traits like licking his hand or purring due to being a furry black cat. He doesn't show his "other" side of him, which is more casual, playful and soft, like a femboy. He wields a karambit.