Cameron Monaghan

Biography

Cameron Riley Monaghan (born August 16, 1993) is an American actor and model. The accolades he has received include nominations for a BAFTA Award and a Critics' Choice Television Award.

Monaghan is known for his roles as Ian Gallagher in the Showtime comedy-drama series Shameless and as twins Jerome and Jeremiah Valeska, who serve as the Joker's origins on the DC Comics-based TV series Gotham. He also portrayed Cal Kestis in the action-adventure game Star Wars Jedi: Fallen Order and its sequel Jedi: Survivor. Monaghan began his career as a child model at the age of three and as a child actor at the age of seven.

Description above from the Wikipedia article Cameron Monaghan, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Known For

TRON: Ares

Caius

Law & Order: Special Victims Unit

Eddie Sandow

NCIS

Nick Peyton

Shameless

Ian Gallagher

Law & Order

Eddie Sandow

Criminal Minds

(archive footage)

Criminal Minds

Jeffrey Charles

The Mentalist

Elliot

Filmography

Year	Movie	Role
2025	TRON: Ares	Caius
2025	FOXBODY	Clyde
2023	My Love Affair with Marriage	Sergei (voice)
2022	Paradise Highway	Special Agent Finley Sterling
2022	Shattered	Chris Decker
2021	DC Showcase: Kamandi: The Last Boy on Earth!	Kamandi (voice)
2020	Joker: Put on a Happy Face	Jeremiah Valeska/The Joker (archive footage)
2019	Built by Jedi - The Making of Star Wars Jedi: Fallen Order	Self
2019	Anthem of a Teenage Prophet	Luke Hunter
2019	Reign of the Supermen	Connor Kent / Superboy (voice)
2019	The Death and Return of Superman	Connor Kent / Superboy (voice)
2018	The Year of Spectacular Men	Ross
2017	Amityville: The Awakening	James Walker
2014	Vampire Academy	Mason Ashford
2014	Jamie Marks Is Dead	Adam McCormick
2014	The Giver	Asher
2014	Mall	Jeff
2012	2nd Serve	Carlos
2011	Prom	Corey Doyle
2010	Another Harvest Moon	Jack
2009	The Three Investigators in The Secret of Terror Castle	Bob Andrews
2009	Safe Harbor	Larry Parker
2008	Dog Gone	Dexter
2007	The Three Investigators in The Secret of Skeleton Island	Bob Andrews
2006	Click	Kevin O'Doyle
2006	The Santa Clause 3: The Escape Clause	Traffic Cop #1
2005	Brothers in Arms	Timmy
2003	The Music Man	Winthrop Paroo
2002	The Wishing Stone	Alex
2002	Adrenaline Rush: The Science of Risk	student (uncredited)

Year	TV Show	Role
2025	LEGO Star Wars: Rebuild the Galaxy - Pieces of the Past	Cal Kestis (voice)
2020	Shameless Hall of Shame	Ian Gallagher
2020	Acting for a Cause	Ferris Bueller
2019	A Little Late with Lilly Singh	Self
2018	Love Daily	Aaron
2016	Mercy Street	Tom Fairfax
2014	Gotham	Jerome Valeska
2014	Gotham	Jeremiah Valeska
2014	Gotham	Joker
2011	Shameless	Ian Gallagher
2011	Corey and Lucas for the Win	Corey
2010	Rizzoli & Isles	Jonathan McKenna
2010	Terriers	Cody Grice
2008	Fringe	Tyler Carson
2008	The Mentalist	Elliot
2008	James Gunn's PG Porn	Young Boy 1
2005	Avatar: The Last Airbender	Twin 1 (voice)
2005	Threshold
2005	Criminal Minds	(archive footage)
2005	Criminal Minds	Jeffrey Charles
2005	Numb3rs	Todd
2004	Ned's Declassified School Survival Guide	Palmer Noid
2003	NCIS	Nick Peyton
2002	Monk	Danny Cooper
2000	Malcolm in the Middle	Chad
1999	Law & Order: Special Victims Unit	Eddie Sandow
1990	Law & Order	Eddie Sandow
	Bosch: Start of Watch	Harry Bosch