Having been formed from the spirits of the Ultra Brother's past foes, including Seagorath, Barabba and Bemstar, Tyrant traveled across the solar system fighting and defeating any Ultras that got in its way before reaching Earth to attack it.
After Tyrant rampaged for a bit, Taro showed up to fight it, defeating it by reflecting its grappling hook back at it.
Ultra Galaxy Mega Monster Battle
Mega Monster Battle: Ultra Galaxy Legends The Movie
Tyrant appears as a member of the Belial Army. He teamed up with Sadola, Vakishim, Alien Reflect, Ho and Galberos to fight Litra. He was later destroyed by Ultraman Zero's Zero Slugger Attack along with Alien Valky, Fire Golza, Alien Guts, King Joe Black and Zetton, being the last monster destroyed by the attack.