|Home world:||Silver Star|
|First appearance:||Captain Ultra Episode 1: "The Alien Bandel Invasion" (1967)|
|Latest appearance:||Captain Ultra Episode 24: "Go! Captain, Beyond the Universe" (1967)|
Alien Kikero Joe
Hack (ハック Hakku) is the robotic companion of Captain Ultra and the only sidekick who remains by Captain's side throughout all of his missions across the series.
Hack went through lots of hardship in the series. He was possessed, broken into pieces and shut down at different points. But, he is always able to help Captain and the crew of the Silver Star defeat whatever foe comes their way, be it the Bandels or a completely different enemy.
Powers and Abilities
|Captain Ultra Kaiju & Seijin|
|Alien Bandel | Alien Kikero Joe | Hack | Bandelar | Gindar | Galban | Blukong | Giant Bandel | Gebird | Reconstructed Bandelar | Bandel Egg | Waldar | Nozlar | Ghoslar | Metallinome | Jaian | Space Man | Amegon | Bakuton | Kyudora | Clone Kyudora | Urugon | Shamolar | Alien Rajigon | Promesaurus' Fossil|