Mac becomes hyperactive to the point of a rabid mania when he eats sugar.
He is very attached to Bloo and it is shown that his biggest fear is never seeing him again, because Bloo is what keeps him happy and cheerful and vice versa. However, his extremely good nature tends to make him somewhat naive. Mac is often the voice of reason among his friends when they are making decisions. Mac (voiced by Sean Marquette) is a bright and creative eight-year-old boy and Bloo's creator who visits Foster's every day. He, along with Mac, made a cameo appearance in The Powerpuff Girls series finale, 'The Powerpuff Girls Rule!'. Bloo loves paddle-balls even though he cannot make the ball hit the paddle. Despite all this, he still has a good heart and apologizes for his actions. Bloo (voiced by Keith Ferguson) is Mac's blue cylinder-domed imaginary friend and best friend who is often very immature, self-centered and egotistical as well as having a knack for getting in trouble and prone for doing kid's and children's antics.
