You remember very little of your old life. You were born in an underwater fortress in the Mariana Trench and raised lovingly by a kindly old warrior who adopted you. As a child, you took pride in cooking blue sky, but it soon became obvious that you were meant for bigger things. That's where your unhealthy obsession with being the best of the best of the best (sir!) came in. It was essential in realising you needed to join Mighty HQ and become a mighty hero. Your time for greatness is here. This is Mighty!
