The Infamous Killjoys: aka the "I.K.'s." Nights Howl as their leader, followed by Blood Moon, Star Fall, Dead Dreamer, and Silver Insanity. Their rivals: the Fab Four. Base: Abandoned Hospital in zone 5 The Fab Four: Party Poison as their leader, followed by Fun Ghoul, Kobra Kid, and Jet Star. Their rivals: I.K.'s. Base: Diner on the border of zone 5 and 6 Missile Kid: escaped battery city. Found by: Dr. Death Defying Taken in by: The Fab Four and the I.K.'s. Fun Ghoul's main goal: end the rivalry and fall in love with an I.K.