Grunge, whose real name is Percival Edmund Chang, was born in Hong Kong. His father, Philip Chang (Team 7's Bulleteer), kept his existence and abilities secret. Grunge was raised in Seattle, Washington. Grunge was placed with I.O. Project Genesis, only to discover he and the other "Gen-Actives" were essentially prisoners being monitored and experimented on. Grunge escapes with Gen13 member Freefall.
Grunge was created in 1994 by writers Jim Lee and Brandon Choi and artist J. Scott Campbell when they created the young superhero team known as Gen 13.
This rebooted version of Grunge hides his exceptional intelligence. When he joins the Wildcats, Spartan recognizes Grunge's intelligence and make him his second-in-command.
Major Story Arcs
Grunge joins the Wildcats where Spartan tasks him with finding a way to spy on John Lynch.
The New 52
Grunge makes his debut in The Culling story line as one of the teen agents of the N.O.W.H.E.R.E. organization. He is tasked with killing Superboy after Superboy rebels against the organization and aids the Teen Titans in rescuing other captive metahuman teens. Grunge is defeated when Superboy uses his tactile telekinesis to rip several cybernetic implants out of his body.
Grunge and the other members of Gen 13 are reunited.
Powers and Abilities
Grunge's foremost ability is his "sponging". Before the Worldstorm soft-reboot, his powers were limited to taking on the characteristics of an object he touched (if he touched rock, he would become as hard as rock and gain super strength). Post-Worldstorm, the scope of Grunge's powers have widened. He can acquire the superpowers of another super being for a short while. He has temporarily gained the wings of the Authori-teen's Nestling, the super strength and flight of the Authority's Apollo, and the super strength of Caitlin Fairchild.
Grunge has been upgraded with cybernetic implants which allow him to transform and take on the characteristics of different objects without having to touch them.
Grunge is a skilled martial artist, has incredible intelligence, and a photographic memory.
In Other Media
Grunge appeared as a main character in the Gen13 animated movie. He is voiced by Flea. Grunge's powers manifested when he saw Freefall being tortured by Threshold.