Boomer

"You don't trust anyone, that's your problem."

Boomer is a hero set for the sequel of Powerpuff Girls, The Rowdyruff Boys Strike Back. He and his brothers become good and say that he and his brothers will always be in the girls' hearts.

New Power
Superhuman Strength - Boomer can lift the most weight out of his trio. He will demonstrate this power with Brick and Butch to ultimately destroy their father, Mojo Jojo.

Personality
Boomer is like your typical average high school coward. Also, when good, he can also become very caring and loving. The same goes to his pet ostrich, Buster.