Derek Fulton is one of the U.S. Marshals that can be selected under the "Marshals" category in the Outfitter. The Marshals category was unlocked without restrictions by Rockstar Games on October 1, 2010 on all systems.
- "You'll be pissin' outta your ass when I'm done with you!"
- "I'd stick my iron up your asshole if I could!"
- "Buzzards will like ya'."
- "How much your momma charge, the no good that spawned ya?"
- "I shat out a prettier thing than you this mornin'."
- "A face wound's about the only thing that'll improve your looks."
- "You're just another dumb bastard that got killed in the West."
- "What's that stink? You shat yourself!"
- "Killin' you would be a pleasure."
- "Them's the clothes you'll be buried in."
- "I'm gonna make this slow and painful."
- "Any last words?"
- He uses the same character model as Marion Freel.
- He shares the same quotes as David Darwinson.
- His face bears a resemblance to Eric Morganson, a multiplayer character in the American Army category.
- Originally intended as a reward for a collective Multiplayer Social Club Challenge called I Shot the Sheriff, which has since been scrapped.