Tilted "Tilt"

Tilted is a young adult who got fused with a parasite. This parasite does everything to protect its host, which causes Tilt to act more violent than he would want to. The parasite needs blood to stay alive, so avoiding people is almost impossible. 

They're kind, sweet, and curious, but very smart. His "father" taught him a lot while growing up. Little did he know he would use this knowledge to stop a rebellion.

He also is obsessed with bugs.