Doctor Hell/Great Marshall of Hell (Enemy of Mazinkaiser and new rival of Alien Dino Thunder Force)

Rias Gremory (Seeks revenge on Ben 10 for killing Issei)

Team RWBY

Katsuki Bakugo

Kirigaya Suguha/Leafa

Winter Schnee

Nolan Grayson/Omni-Man

Homelander

Artoria Pendragon/Saber

Endeavor

Satsuki Kiryuin

Night Raid

Enterprise

A/N: The Court of Union-Verse is composed of Union Students and Headmasters who seek revenge on Ben 10 and the Alien Dino Thunder Force. Somehow they also pledged their loyalty to Doctor Hell, the archenemy of Mazinkaiser