- Sterling D. Ardrey - Young Derek Morgan
- Kevin Scott Allen - Bartender
- Jon Barton - SWAT Leader
- Alexander Bedria - Police Officer #1
- C.J. Brown - Scrappy Boy #1
- Darrell Bryan - Father
- Keith Burke - Hank Morgan
- James Gregory Capps - Los Angeles Cop
- Shane Conrad - Officer Mark Cunningham
- Guillermo Díaz - Playboy
- Hollis Doherty - Maggie Cunningham
- Andre G. Ellingson - Police Officer #2
- Bo Foxworth - Officer Ron Mercer
- Jerald Garner - Morgue Worker
- Meta Golding - Agent Jordan Todd
- Christopher Guckenberger - Punk
- Reed Harper - Scrappy Boy #2
- Zokai Holmes - Sharpshooter
- Charles Hoyes - Sergeant Selby
- Roddy Jessup - Sergeant Daws
- Doug Jones - Beanie
- Steve Knoll - Police Sergeant
- Jake McLaughlin - Officer Thomas Kayser
- Mark Pellegrino - Lieutenant Evans
- Eddie Perez - Diablo
- Joe Regalbuto - Commander Marks
- Maria Russell - Police Operator
- Roberto Sanchez - Sergeant Manuel Rodriguez
- Dylan Sprayberry - Sam Cunningham
- Derek Morgan: "We are all brothers under the skin and I, for one, would be willing to skin humanity to prove it." – Ayn Rand
- Derek Morgan: "For he today who sheds his blood with me shall be my brother." – William Shakespeare
- Mark Pellegrino, who portrays Lieutenant Evans, previously portrayed mass murderer Dick Hickock in the 2005 movie Capote.
- Doug Jones, the actor who portrays Beanie, previously appeared on Criminal Minds, starring as drug-addicted robber and murder suspect Domino Thacker in the Season One episode Blood Hungry.
- Roberto Sanchez, the actor who portrays Sergeant Manny Rodriguez, previously appeared on Criminal Minds, starring as a SWAT agent in the Season One episode The Fox.
- ↑ Credited as "Fight Club Captain"
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