Add your OC fighting on the leviathan. ONE AT A TIME! Can't kill or harm the leviathan. Code your character to sway back & fourth with the movement. Alternative Sets of the Leviathan are provided. Don't be lazy, acctualy give the animation effort. Don't change the song. Nothing bigger than the Leviathan. (Background kaiju is fine. It just can't interact with the leviathan.) Have Fun!
@Distructosaurus for the project. @Charlieplays_media because he redeemed himself.