Peter S. Brown, better known his stage name Peter Vack, is an American actor, writer, director and producer. He is best known for portraying Jason Strider in the MTV comedy series I Just Want My Pants Back (2011–2012), and Alex Merriweather in the Amazon Video comedy-drama series Mozart in the Jungle (2014–2015). Vack also voiced antagonist Gary Smith in the Rockstar Games video game Bully.

Bully is a 2006 action-adventure video game developed by Rockstar Vancouver and published by Rockstar Games. It was released on 17 October 2006 for the PlayStation 2. A remastered version of the game, subtitled Scholarship Edition, was developed by Mad Doc Software and released on 4 March 2008 for Xbox 360 and Wii, and on 21 October 2008 for Windows. Bully was re-released for PlayStation 4 available via PlayStation Network on 22 March 2016. An updated version of the Scholarship Edition, titled Anniversary Edition, was developed by War Drum Studios and released for Android and iOS on 8 December 2016.