Momo Yaoyorozu has a twin brother called Tony who has the same quirk as her.
He went through life with his sister as both dreamed of being heroes together.
Sadly he was killed during the war, getting Momo to promise to always be cheerful and to be a hero for the both of them.
Fortunately for him, this was not the true end of his journey.
For he would be saved by unlikely individuals and sent into another world he had seen on T.V.
The world that contains Cybertronians.
