|Status||Imprisoned in a Mask|
|Oni Mask||Kiiro's Mask|
|Previous Affiliation||Feudal Japan|
|Mask Debut||Season 4 Episode 3|
|Debut/Closing||Season 4 Episode 13|
He is yellow, has red eyes and two dark yellow horns. when the Oni General is free the General has bat wings.
In The Amazing T-Troop, his mask was found in a museum in San Francisco. Hak Foo tried to put on the mask, but he once again failed and the mask ended up on Scruffy. The mask was removed at the end of the episode with the use of Japanese rice.
In Ninja Twilight, after the nine masks were joined together, all of the Oni generals were freed and tried to destroy the world. Kiiro went with Midori to one of the four corners of the earth. They were briefly defeated by El Toro Fuerte, but Tarakudo managed to capture him. After Jade put Tarakudo's Mask on his face (after he was transformed into flesh and blood), all the Oni and Shadowkhan were imprisoned within.