Often plays a villainous character.
Son of English actress Eileen Bell.
Studied in New York City with Ellen Burstyn.
Is probably best known as Jigsaw/John Kramer in the "Saw" movies.
Has never been, and to this day is not, a fan of horror films, despite playing his menacing character Jigsaw in the "Saw" trilogy.
Donated two vials of his own blood to be mixed with red ink for 1000 posters to help promote Saw III (2006). All proceeds went to the American Red Cross.
His favorite Saw traps are the Jaw Splitter from the first film and the Syringe Pit from the second.
In addition to being an actor he is also a Little League baseball coach.
Considers Saw II (2005) his favorite out of the "Saw" trilogy.
He had a small role in Goodfellas (1990), with Joe Pesci. Pesci later played David Ferrie in JFK (1991), the same role Bell played in Ruby (1992).
Splits his time with his wife and two children between his homes in New York and Los Angeles.
Profiled in "Character Kings: Hollywood's Familiar Faces Discuss the Art & Business of Acting" by Scott Voisin. 
Tobin's father, Joseph Henry Bell, built and established the radio station WJDA in Quincy, MA. Joseph was American-born, from a Massachusetts family, of Irish descent. Tobin's mother, actress Eileen Bell, was British-born, and had roots in County Cork.
As of 2014, has appeared in four films that were nominated for the Best Picture Oscar: The Verdict (1982), Tootsie (1982), Mississippi Burning (1988) and Goodfellas (1990).
Appeared in four films with Gene Hackman: Mississippi Burning (1988), Loose Cannons (1990), The Firm (1993) and The Quick and the Dead (1995).