Since the sinister forces led by the villainous Black Hole (a.k.a. "Professor Darkness"™) have vowed to destroy the solar system, the brave and resourceful Planet Heroes™ were formed to protect the peaceful planets from danger and disaster. Ruthless, scary, and bad to the bone, he's a hulking nightmare of twisted ambition and seething destruction. He never goes many light years without his corrupt little Comet "Photon"™ & Comet "Neutron"™ who race across the universe to do the devious dirty work of the guy they call "Professor Darkness™". From Alpha Centauri to the North Pole, nobody is safe from the power of "Professor Darkness" (Black Hole)! Includes 3 replaceable mercury-free button-cell batteries. Please dispose of batteries safely