Boomer is the blond-haired, blue-eyed member of The Rowdyruff Boys. He is Bubbles' male equivalent and evil counterpart and was originally created by Mojo Jojo. After being killed by the Powerpuff Girls' kiss of death, he was reincarnated by HIM and was given a cootie shot to prevent the same mistake to be repeated. Opposed to Bubbles' color light blue, Boomer's is more like a cobalt blue. His key element is "Snips".