Boomer: Bubbles's equivalent, he is a loud-mouthed dimwit, as opposed of Bubbles's naive sweetness. He is often picked on by his brothers due to being extremely naive(and, to an extent, his stupidity). Bubbles stated in "The Boys are Back in Town" that she thought Boomer was "cute". His hair parts in a curved fasion like Bubbles; in goes on longer on each side and lacks pigtails. After his resurrection, his hair is longer and spikier on each end. One difference between him and Bubbles is that he isn't easily disgusted, where as she would be very easily disgusted by most of the stuff he would...

In the Rowdyruff Boys' self-titled debut episode, Mojo Jojo created them during a stay in prison. Desperate to find a way to create a power to equal to the Powerpuff Girls, Mojo Jojo placed an anonymous phone call to Professor Utonium, who was all too willing to tell "the stranger on the phone from Townsville Community College" his recipe for the girls' creation.

Finding the ingredients of sugar, spice, and everything nice "too girlish" for his needs, Mojo wanted something "tougher" and "more manly". So he made a few variations on the recipe with everything he needed available in prison: snips...