Hun

Hun is the secondary main antagonist in the 2003 Teenage Mutant Ninja Turtles cartoon series. He is leader of the Purple Dragons and the right hand of the Utrom Shredder. He is Casey's archenemy.

History
Hun started his criminal career in his teen years and lead the Purple Dragons. He and a group of Purple Dragons burned down the store of Arnold Jones (Casey's father) after he refused to pay the Purple Dragons protection money. Hun told Casey to tell his father to pay up next time or else. However, Arnold went to the police which made Hun killed him. Sometime later, the Shredder found him and took him as a protege after he realized his potential. In the beginning of the 2003 series, he left his operations to Johnny and Dragon Face while he serves the Shredder. In "Attack of the Mousers", he was sent by the Shredder to bring Dr. Baxter Stockman to the Foot HQ and gave him his punishment by drilling out his left eye. He delivered the sword to Saki in "Darkness on the Edge of Town" and punished two Foot technicians for losing it to the TMNT. Hun was later ordered by the Shredder to team up with Stockman to find info on the Turtles in "The Way of Invisibility."Hun let Ralph so the Foot Tech ninjas follow him to the other turtles. The TMNT defeated the ninjas and Baxter Stockman blamed Hun for the failure of the mission. However, Stockman was taken away by two Foot Tech ninjas. Hun report to Oroku Saki that based on his interrogation, the Turtles don't know anything about Saki, Saki's enemies, or the Foot Clan. Oroku Saki decides that the Turtles may be useful to him when the time is right.

First Conflict with the Turtles
In "Fallen Angel", he hosts the Purple Dragons cage match.