Career
Koenig played Richard "Boner" Stabone, a recurring role in the first four seasons of the
ABC sitcom
Growing Pains. From 1985 to 1989 he played best friend to Kirk Cameron's Mike Seaver on the series, which was a Top 10
Nielsen ratings hit. During the same period, he guest starred on episodes of other successful series, the sitcoms
My Sister Sam and
My Two Dads and the drama
21 Jump Street.
In the early 1990s he provided a voice for the animated series
G.I. Joe as Ambush and Night Creeper Leader, and had a minor role as Tumak in "
Sanctuary," a 1993 episode of
Star Trek: Deep Space Nine.Five years before
Heath Ledger played the role in the big-budget
The Dark Knight, Koenig took the character of
The Joker back from the colorful camp of Cesar Romero and Jack Nicholson to the convincingly creepy, maniacal intellect of the graphic novels in the well-received fan film
Batman: Dead End (2003). Directed by commercial director
Sandy Collora, the short received its first screening at the San Diego Comic-Con International. Director
Kevin Smith called it "possibly the truest, best Batman movie ever made".
Onstage, he starred as the M.C. in the 2007 interactive theater play
The Boomerang Kid and performed with the improv group
Charles Whitman Reilly and Friends.
Though he continued his performing career including acting in the independent

film
The Theory of Everything (2006),
Koenig worked increasingly behind the scenes. He wrote, produced and/or directed the shorts
Good Boy (2003) and
Woman in a Green Dress and
Instinct vs. Reason (2004). Most recently he was working as an editor on a number of films and had been a video producer for the award-
winning podcast Never Not Funny (2006-2010). His final role was in the film
DaZe: Vol. Too — NonSeNse, in production at the time of his death, with Koenig portraying the Vice Chancellor.
DeathIn February 2010,
Koenig was reported missing by friends and family. He was last seen near a bakery in Vancouver, British Columbia, Canada on February 14, and missed a scheduled flight back to the U.S. on February 16. According to his parents, Koenig left evidence that he was depressed prior to his disappearance. On February 25, 2010, it was reported by
CNN that his body was found by friends searching for him in
Stanley Park in
Vancouver. Police later confirmed Koenig's body was found earlier in the day, and
Koenig's father told reporters at an evening press conference that his son took his own life.
Source : http://en.wikipedia.org/wiki/Josh_Andrew_Koenig