Kid Mugg is a pre-made, deceased teen who once lived in Twinbrook. He starved to death and rests in the Ivy Hill Graveyard. One strange thing about him is that he's considered to have completed his lifetime wish, even though he didn't have one.
He, Darla Inkbeard of Barnacle Bay, Donna Parr-Teague of Appaloosa Plains and Cody Remington of Riverview, along with Fricorith Tricou and Jimmy Vu of Moonlight Falls are the only pre-made deceased teens in The Sims 3 and its expansions. Like every other deceased Sim from Twinbrook, he has a pale green skin, grey hair and bare feet.