Brian Patrick Stepanek (born February 6, 1971) is an American actor, comedian, singer, musician, impressionist, television host and voice actor. He is known for his role as Arwin Hawkhauser on the Disney Channel Original Series The Suite Life of Zack & Cody and Brian on Brian O'Brian. He was also a Sector Seven Agent in the 2007 Michael Bay film Transformers and also had a supporting role in The Island. He is now known for playing Tom Harper on the Nickelodeon Sitcom Nicky, Ricky, Dicky & Dawn; the voice of Lynn Loud Sr. on the Nickelodeon animated series The Loud House; and as the voice of Magnifo on the shortform Cartoon Network/The LEGO Group television series Mixels.
- Lemony Snicket's A Series of Unfortunate Events - Additional voice
- Heavelori's Loud Dream, various Loud House media - Lynn Loud Sr.
- Backyard Sports - Marky Dubois