|Human Host/Form:||Hideki Goh|
|Home world:||Planet Earth (Superior 8 Universe)|
|Voice actor(s):||Jiro Dan|
Masao Nakasone (stock grunts)
|Suit actor(s):||Shinya Iwasaki|
|First Appearance:||Great Decisive Battle! The Super 8 Ultra Brothers|
|Number of Appearances:||1 (Movie)|
|Affiliation:||Alternate Ultra Brothers|
When the other Ultras were having difficulty fighting Giga Khimaira, Goh and his brothers change into their Ultra forms. The four original Ultra Brothers: Ultraman, Ultraseven, Ultraman Jack and Ultraman Ace revived the defeated Mebius. Later they all joined Tiga, Dyna and Gaia against the Giga Khimaira. They defeated it with the Ultra Superior attack. However, Black Silhouettes appeared and combined into the Giant Black Silhouette, telling them he would always be alive if there was still darkness in humanity's hearts. Mankind's determination allowed the eight Ultras to achieve their Glitter forms, and Giant Black Silhouette was soon defeated by the eight Ultras' Superior Myth Blaster.
Later, Goh and his wife would ride their plane and travel with everyone to Nebula M78.
- Home World: Planet Earth (Superior 8 Universe)
- Height: 40 m
- Weight: 35,000 t
- Time Limit: None demonstrated
- Color Timer: The standard Color Timer, but unlike its Showa Era counterpart it showed no sign of a time limit.
- Eyes: Ultraman Jack can see beyond the visible spectrum, perhaps the entire spectrum.
- Specium Ray (スペシウム光線 Supeshiumu Kōsen): When Ultraman Jack puts his arms in a plus (+) sign, with his right arm vertical and his left one horizontal, he can fire a powerful beam from his right vertical hand that can destroy monsters in one hit. It's exactly like Ultraman's Specium Ray.
- Hand Slash: An energy slash from his right hand.
- Ultra Purify: Jack along with Seven, Ace and Ultraman can fire a ultra beam from their right arm, used to revive Mebius.
- Ultra Grand Wall: A combination shield that can reflect enemy attacks.
- Ultra Repair: An energy wave used to repair the damages done by Giga Khimaira.
- Superior Strike: Ultraman and the other Superior Ultra Brothers fire their respective finisher attacks.
- Ultra Superior: Similar to the Superior Strike, except Seven fires his Emerium Ray. Used to destroy Giga Chimera in space.
- Multiple Eye Slugger: When a blue variant of the Ultra Superior is fired at the Eye Slugger, it can can multiply into many copies.
Glitter Jack was born from mankind's hope to defeat the Giant Black Silhouette.
- Glitter Specium Ray (グリッタースペシウム光線 Gurittā Supeshiumu Kōsen): An upgraded version of his signature finisher.
- Superior Myth Blaster: A combination attack where the Superior Ultra Brothers fire their respective finisher attacks.
- Like all Ultras in this universe, Ultraman Jack has a green Color Timer, the exception is Mebius whom is from the Showa Universe.