Thomas Alexander Dekker (born December 28, 1987) is an American film and television actor and a musician. He is also a singer and has written and produced two albums. He is best known for his roles as John Connor in Terminator: The Sarah Connor Chronicles, Nick Szalinski on Honey, I Shrunk the Kids: The TV Show, and Zach on Heroes. He also did the voice of Littlefoot in The Land Before Time V-IX (singing voice in The Land Before Time V) and as Fievel Mousekewitz in An American Tail: The Treasure of Manhattan Island and An American Tail: The Mystery of the Night Monster. He is also known for playing Jesse Braun in the 2010 remake of A Nightmare on Elm Street, and recently, Smith in Gregg Araki's film Kaboom.
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Little Dixie
Clarke Moore
2023

The Rookie: Feds
Owen/Jeffrey Boyle · (1 episode)
2022

Swimming with Sharks
Travis · (6 episodes)
2022

Blue Call
Derek
2021

Body Brokers
Jacko
2021

Star Trek: Picard
Titus Rikka · (1 episode)
2020

A.I. 187
Nate Palmer
2019

Miss Bala
Makeup Supervisor
2019

The Rookie
Jeffrey Boyle · (1 episode)
2018

Once Upon a Superhero
Teeto
2018

Do You Take This Man
Bradley
2017

Welcome to Willits
Klaus
2016

It Takes a Village: The Making of Village of the Damned
Self
2016

Backstrom
Gregory Valentine · (13 episodes)
2015

Fear Clinic
Blake
2014

Lost in the White City
Kyle
2014

The Palmer Supremacy
2014

Squatters
Jonas Trumball
2014

Plush
Jack
2013

The Good Lie
Cullen Francis
2013

Enter the Dangerous Mind
Jake
2013

Angels Crest
Ethan
2011

Foreverland
Bobby
2011

ChromeSkull: Laid to Rest 2
Tommy
2011

The Secret Circle
Adam Conant · (22 episodes)
2011

Cinema Verite
Lance Loud
2011

Kaboom
Smith
2010

All About Evil
Steven
2010

A Nightmare on Elm Street
Jesse Braun
2010

Glenn Martin, DDS
(voice) · (1 episode)
2009

My Sister's Keeper
Taylor Ambrose
2009

Laid to Rest
Tommy
2009

Whore
Tom
2008

From Within
Aidan
2008

Terminator: The Sarah Connor Chronicles
John Connor · (31 episodes)
2008

Heroes
Zach · (11 episodes)
2006

Shark
Ben Channing · (1 episode)
2006

The Land Before Time: 2 DinoRiffic Adventures
Littlefoot
2006

Campus Confidential
Brett
2005

House
Boyd · (1 episode)
2004

The Land Before Time IX: Journey to Big Water
Littlefoot (voice)
2002

The Mummy: Quest for the Lost Scrolls
Simon Montgomery (voice)
2002

Fillmore!
James Heron (voice) · (3 episodes)
2002

The Land Before Time VIII: The Big Freeze
Littlefoot (voice)
2001

Reba
Buzzer · (1 episode)
2001

The Land Before Time VII: The Stone of Cold Fire
Littlefoot (voice)
2000

CSI: Crime Scene Investigation
Jimmy Jones · (1 episode)
2000

Grosse Pointe
Leslie Chupak · (1 episode)
2000

Jackie Chan Adventures
Young Valmont (voice) · (2 episodes)
2000

The Land Before Time V: The Mysterious Island
Littlefoot (singing voice)
1997
Boris Is Dead
Antonio
Halloween Store
Hunter Graham

Boston Public
Julien McNeal · (2 episodes)
2000

An American Tail: The Mystery of the Night Monster
Fievel Mousekewitz (voice)
1999

Family Guy
Kid in bathroom (voice) · (1 episode)
1999

The Land Before Time VI: The Secret of Saurus Rock
Littlefoot (voice)
1998

An American Tail: The Treasure of Manhattan Island
Fievel Mousekewitz (voice)
1998

Honey, I Shrunk the Kids: The TV Show
Nick Szalinski · (66 episodes)
1997

The Weird Al Show
Son · (1 episode)
1997

7th Heaven
Vincent · (9 episodes)
1996

Caroline in the City
Young Richard · (1 episode)
1995

Village of the Damned
David McGowan
1995

Star Trek: Voyager
Henry Burleigh · (2 episodes)
1995

Star Trek: Generations
Picard's Kid
1994

Touched by an Angel
Dennis · (1 episode)
1994

The Nanny
J.B. Bingington's Son · (1 episode)
1993

Seinfeld
Bobby · (2 episodes)
1989

Seinfeld
Bobby (voice) · (1 episode)
1989