Cameron Monaghan
Cameron Riley Monaghan (born August 16, 1993) is an American actor and model. He is known for his role as Ian Gallagher on the Showtime comedy-drama series Shameless and as twins Jerome and Jeremiah Valeska, who serve as origins for the Joker, on the DC Comics-based TV series Gotham. He also portrayed Cal Kestis in the action-adventure game Star Wars Jedi: Fallen Order. Monaghan began his career as a child model at the age of three and as a child actor at the age of seven.
Acted in
TRON: Ares
2025
My Love Affair with Marriage
2023
as Sergei (voice)
Paradise Highway
2022
as Special Agent Finley Sterling
Shattered
2022
as Chris Decker
DC Showcase: Kamandi: The Last Boy on Earth!
2021
as Kamandi (voice)
Shameless Hall of Shame
2020
as Ian Gallagher
Acting for a Cause
2020
as Ferris Bueller
Built by Jedi - The Making of Star Wars Jedi: Fallen Order
2019
as Himself
The Death and Return of Superman
2019
as Connor Kent / Superboy (voice)
Reign of the Supermen
2019
as Connor Kent / Superboy (voice)
Anthem of a Teenage Prophet
2019
as Luke Hunter
The Year of Spectacular Men
2018
as Ross
Love Daily
2018
as Aaron
Amityville: The Awakening
2017
as James Walker
Mercy Street
2016
as Tom Fairfax
Gotham
2014
as Jerome Valeska
Gotham
2014
as Jeremiah Valeska
Gotham
2014
as Joker
The Giver
2014
as Asher
Jamie Marks Is Dead
2014
as Adam McCormick
Mall
2014
as Jeff
Vampire Academy
2014
as Mason Ashford
2nd Serve
2012
as Carlos
Prom
2011
as Corey Doyle
Corey and Lucas for the Win
2011
as Corey
Shameless
2011
as Ian Gallagher
Shameless
2011
as Self
Another Harvest Moon
2010
as Jack
Terriers
2010
as Cody Grice
Rizzoli & Isles
2010
as Jonathan McKenna
Safe Harbor
2009
as Larry Parker
The Three Investigators and the Secret of Terror Castle
2009
as Bob Andrews
James Gunn's PG Porn
2008
as Young Boy 1
Dog Gone
2008
as Dexter
The Mentalist
2008
as Elliot
Fringe
2008
as Tyler Carson
The Three Investigators and The Secret Of Skeleton Island
2007
as Bob Andrews
The Santa Clause 3: The Escape Clause
2006
as Traffic Cop #1
Click
2006
as Kevin O'Doyle
Criminal Minds
2005
as (archive footage)
Criminal Minds
2005
as Jeffrey Charles
Threshold
2005
Avatar: The Last Airbender
2005
Brothers in Arms
2005
as Timmy
Ned's Declassified School Survival Guide
2004
as Palmer Noid
NCIS
2003
as Nick Peyton
The Music Man
2003
as Winthrop Paroo
Monk
2002
as Danny Cooper
The Wishing Stone
2002
as Alex
Adrenaline Rush: The Science of Risk
2002
as student (uncredited)
Malcolm in the Middle
2000
as Chad
Law & Order: Special Victims Unit
1999
as Eddie Sandow
Law & Order
1990
as Eddie Sandow