|Jafar says: Read my lips and come to grips with the reality!|
Evil Tiga (イーヴィルティガ Īviru Tiga) is an antagonist in Ultraman Tiga. He was an Ultra that originally a good Ultra, but due to evil host's heart, he became wicked too.
Dr. Keigo Masaki stole Spark Lens from Daigo after he founds out that Ultraman Tiga was Daigo Madoka to fused with warrior and become Evil Tiga. Evil Tiga flight to the city and destroyed them.
The GUTS tried to stop him, but he decided to destroy the fighter jet so they can't disturb him. Suddenly, his former companion named Guarde tried to stop his master from destruction. Because of Guarde, Evil Tiga can't take it and started to killed him.
While Guarde tried to stop him, but it didn't changed his master, Evil Tiga. After Daigo got Spark Lens back, he transformed into Ultraman Tiga to stop him. Later Evil Tiga killed Guarde, much to Tiga's rage and started to fight with him.
During the fight, their color timers begans to run lower and they started to finished themselves once and for all. After that, Tiga started to get tired and almost fell down, but Evil Tiga's energy almost runs out and started to fall down, which made Ultraman Tiga got his chance to destroyed him once and for all with modified Zepellion Ray.