Fools, you though you just clash like that in my domain, i can hear all those noises from zillion light years away, plus, how can i miss such fun event?
for reference, mega is a being created from the clash of two living dwarf star, born from the radiation between the clash, he's meant to be a god the moment he was born, he also monitors all the omniverses that most of us are familiar with, imagine being close friends with the watcher from marvel and zeno from dragonballs, a god that most celestials would avoid to come contact except good friends, mega can shift reality and can copy other people's ability, power, weapons, voice and even appearance with a look, from most obvious parts to extremely small details, to the point that mega would warp his inner structure(organs included) to match the creature he's transforming into, making his moves literally unpredictable