Mark Ross Pellegrino was born on April 9th 1965 in Los Angeles, California, United States. In 1987 he hit the big and small screens as a punk in L.A. Law and Death Wish 4: The Crackdown.

In 1989 Pellegrino played Hulk Hogan’s younger brother in the movie No Holds Barred. Further appearence came in Night Life, Doogie Howser M.D., Hunter, Tales from the Crypt, Prayer of the Rollerboys, Blood and Concrete, Lethal Weapon 3, and Northern Exposure.

In 1994 Pellegrino appeared as Robert Lee in the Knight Rider TV movie revival Knight Rider 2010.  Further appearances included Renegade, ER, Nash Bridges, The Sentinel, The Big Lebowski, Mulholland Drive, Brimstone, The X-Files, and Clubland.

In 2001, Pellegrino starred in The Beast, as well as made a number of appearances in NYPD Blue (his first appearance was in 1997). He also appeared in The Hunted, Zelda, Twisted, Without a Trace, Capote, The Unit, The Number 23, Burn Notice, Grey’s Anatomy, Dexter, Numb3rs, Prison Break, Ghost Whisperer, Criminal Minds, and Locke and Key.

In 2009 Pellegrino captured the world’s imagination with his role as Jacob in Lost. Speculation about who Jacob was almost crashed the internet. This was followed up with roles in Bad Meat, The Closer, Chuck, Castle, Grimm, Person of Interest, Revolution, Being Human, The Tomorrow People, The Returned, Quantico, and 13 Reasons Why.

In 2009, Pellegrino took the role of Lucifer in Supernatural where he continues to wow his audience: