Guigass was a monster awoken from the effects of the comet Tsuifon as it passed the Earth. He awoke in the Arabis Mountains, emitting radio waves that could potentially detonate six missing nuclear bombs. Once the comet passed, the Science Patrol started a full search for the missing weapons and soon crossed paths with Guigass. As the team retreated, the monster Dorako flew in. They managed to lure Dorako to Guigass where the pair quickly engaged in combat.

As the titans waged war, a third contender burst forth from the rocks: Red King (who had swallowed the nuclear bombs). Red King challenged both Guigass and Dorako. The pair were no match for the deadly monster and Guigass was sent into full retreat, but the Science Patrol couldn't allow such a dangerous beast to exist. As Guigass crawled away, they unleashed their Extreme Drought Bomb, a bomb that completely desiccates its target, putting a sudden end to his life while Ultraman dealt with Red King.