Jonathan Kimble "J. K." Simmons is an American actor. He is best known for his roles on television as Dr. Emil Skoda in NBC's Law & Order , Assistant Police Chief Will Pope in TNT's The Closer, neo-Nazi Vernon Schillinger in the HBO prison drama Oz, on film as J. Jonah Jameson in Sam Raimi's Spider-Man trilogy and the upcoming animated series Ultimate Spider-Man, Mac MacGuff in Juno, and as the voice of Cave Johnson in Portal 2. In 2011, Simmons appeared on the Adult Swim series NTSF:SD:SUV::. He is now the voice of Tenzin, Aang's youngest son, on the Nickelodeon show The Legend of... Korra. Simmons was born in Detroit, Michigan, the son of Patricia , an administrator, and Donald William Simmons, a college professor. He has a brother, David , and a sister, Elizabeth. He attended the University of Montana and was a member of the Seattle Repertory Theatre. Simmons was a Broadway actor and singer. He was in the revival of Guys and Dolls as Benny Southstreet. In 1994 he sang multiple roles in the Wagner opera satire, DAS BARBECU.
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