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
Canus
2025

FOXBODY
Clyde
2025

My Love Affair with Marriage
Sergei (voice)
2023

Paradise Highway
Special Agent Finley Sterling
2022

Shattered
Chris Decker
2022

DC Showcase: Kamandi: The Last Boy on Earth!
Kamandi (voice)
2021

Shameless Hall of Shame
Ian Gallagher · (1 episode)
2020

Joker: Put on a Happy Face
Jeremiah Valeska/The Joker (archive footage)
2020

Acting for a Cause
Ferris Bueller · (1 episode)
2020

Built by Jedi - The Making of Star Wars Jedi: Fallen Order
Self
2019

The Death and Return of Superman
Connor Kent / Superboy (voice)
2019

A Little Late with Lilly Singh
Self · (1 episode)
2019

Reign of the Supermen
Connor Kent / Superboy (voice)
2019

Anthem of a Teenage Prophet
Luke Hunter
2019

The Year of Spectacular Men
Ross
2018

Love Daily
Aaron · (1 episode)
2018

Amityville: The Awakening
James Walker
2017

Mercy Street
Tom Fairfax · (12 episodes)
2016

Gotham
Jerome Valeska · (12 episodes)
2014

Gotham
Jeremiah Valeska · (10 episodes)
2014

Gotham
Joker · (1 episode)
2014

The Giver
Asher
2014

Jamie Marks Is Dead
Adam McCormick
2014

Mall
Jeff
2014

Vampire Academy
Mason Ashford
2014

2nd Serve
Carlos
2012

Prom
Corey Doyle
2011

Corey and Lucas for the Win
Corey · (6 episodes)
2011

Shameless
Ian Gallagher · (134 episodes)
2011

Another Harvest Moon
Jack
2010

Terriers
Cody Grice · (1 episode)
2010

Rizzoli & Isles
Jonathan McKenna · (1 episode)
2010

Safe Harbor
Larry Parker
2009

The Three Investigators in The Secret of Terror Castle
Bob Andrews
2009

James Gunn's PG Porn
Young Boy 1 · (1 episode)
2008

Dog Gone
Dexter
2008

The Mentalist
Elliot · (1 episode)
2008

Fringe
Tyler Carson · (1 episode)
2008

The Three Investigators in The Secret of Skeleton Island
Bob Andrews
2007

The Santa Clause 3: The Escape Clause
Traffic Cop #1
2006

Click
Kevin O'Doyle
2006

Criminal Minds
(archive footage) · (1 episode)
2005

Criminal Minds
Jeffrey Charles · (1 episode)
2005

Threshold
(1 episode)
2005

Avatar: The Last Airbender
(1 episode)
2005

Brothers in Arms
Timmy
2005

Ned's Declassified School Survival Guide
Palmer Noid · (3 episodes)
2004

NCIS
Nick Peyton · (1 episode)
2003

The Music Man
Winthrop Paroo
2003

Monk
Danny Cooper · (1 episode)
2002
The Wishing Stone
Alex
2002

Adrenaline Rush: The Science of Risk
student (uncredited)
2002

Malcolm in the Middle
Chad · (6 episodes)
2000

Law & Order: Special Victims Unit
Eddie Sandow · (1 episode)
1999

Law & Order
Eddie Sandow · (1 episode)
1990