Combustion Man

History
Combustion Man is an assassin with a very unique Firebending talent. He has the ability to super-heat the air and cause explosions. He does this by focusing and shooting his energy from his tattooed third eye. He can do this with his mind and has no need to learn he proper movements. Combustion Man discovered this ability when he was a young child, but didn't have any control over it, and one day he accidentally blew off his arm and leg. Now, he has a metal arm and leg in their place. (nick.com)

Combustion Man was hired by Zuko to kill Aang and keep quiet about it. When Aang gets caught by two Fire Nation soldiers, the send a Messenger Hawk to Fire Lord Ozai telling him that the Avatar is alive. However, the message is later intercepted by a Ravenhawk, owned by Combustion Man. He quickly reads it and burns the message using his mind. Combustion Man finally arrives near the campsite of Aang and his friends. Toph hears the enemy's approach, commenting that a man made of metal is coming. Combustion Man attacks, projecting rays of energy from his forehead tattoo. His bolts counter anything the gang throws at him, forcing the kids to take cover. Aang tells his friends to get on Appa and get ready to escape as he himself tries to lead the enemy away. What follows is a running battle as Aang uses both Airbending and Earthbending to fend off Combustion Man's attacks. Nothing seems to work and Aang eventually retreats onto Appa and the group fly away.