He is best known for his roles as the ruthless Nietzschean mercenary Tyr Anasazi in the science-fiction series Gene Roddenberry's Andromeda[3] from 2000 to 2005 and as Noah Keefer on All My Children[4][5] from 1994 to 1996.
A classically trained actor, he appeared in a number of Shakespearean productions in the New York area before breaking into television in the mid 1990s.
He left the Andromeda TV series at the start of the fourth season,[9] citing dissatisfaction over the development of his character and went back to stage productions.
Cobb's 2015 play American Moor explores the experiences of Black actors performing texts as written and directed by white writers and directors.
[12] He continues to act in theater productions, including roles as Oberon and Duke Theseus in A Midsummer Night's Dream in New York's Geva Theater Center,[13] and the bigoted Juror #10 in Twelve Angry Men at Briggs Opera House in White River Junction, Vermont.