Dabi is a villain he's real name is Touya but he change he's name when he faked his death. At first he was a child with dreams of becoming a hero but he's father stop training him and dropped him. (He would get burn by using he's power) Dabi would secretly train by himself because his father would mad at him. When he's father found out he was training he got mad at Dabi. So Dabi used he's power he disappeared and got burned almost every part of his body. Dabi's parents thought he died but years past and he became a villain.