Dragon Ball Daima has mentioned several times that there's an ancient Demon Realm artifact of immense power known as the Evil Third Eye, and Gomah has sought after it since the very first episode.

In Doom The Dark Ages, you’ll be an iron tank, heavy, strong but still fast. A grounded combat system with an emphasis on power over the acrobatics of Doom Eternal.” ...

Doom is already a pretty metal series. Hell, flames, the damn music, demons getting turned inside ... the game via a weapon that burps out a metal ball on a chain "to break bones with," or ...