Brian Phillip Rosenthal (born July 7th, 1989) is an American actor and singer from Ann Arbor, Michigan. He has appeared in three Team StarKid productions. Rosenthal is best known for portraying Quirrel in A Very Potter Musical. He also played Seamus Finnigan, James Potter, Past Ron, and Station Guard in A Very Potter Sequel. He reprised his roles as Quirrel, James Potter, and Seamus Finnigan in A Very Potter Senior Year. He attended the University of Michigan from 2007 to 2011. He had a cameo as a Starship Ranger in a video that appeared in Starship. He did not attend the SPACE Tour, but participated in the Apocolyptour. He currently lives in Los Angeles with fellow StarKid, Joey Richter.
• He went to the Ester Earl Rocking Charity Ball (LeakyCon) in 2011 and crowd surfed sometime before or after dancing with Evanna Lynch.
• When he was very young, he disgraced his family by urinating on a tree in his front yard while his neighbors looked on.