Mark is the biological son of Harry Wilson and Tracy Clark, He was given up for adoption after birth, Harry didn´t know about his existence until 2008 when Tracy finally revealed the truth to him.
Appearances
90210
Guest cast, played by Charlie Weber
- Episode 5x14: Brother from Another Mother (Feb 18, 2013)
- Episode 5x15: Strange Brew (Feb 25, 2013)
- Episode 5x16: Life's a Beach (Mar 4, 2013)
- Episode 5x17: Dude, Where's My Husband? (Mar 11, 2013)
- Episode 5x18: A Portrait of the Artist as a Young Call Girl (Apr 15, 2013)
- Episode 5x19: The Empire State Strikes Back (Apr 22, 2013)
- Episode 5x20: You Can't Win 'Em All (Apr 29, 2013)