Tom Berenson
Biographical information


Host to

unnamed Yeerk
Temrash 114 (formerly)



Hair color


Eye color







Steve Berenson (father)
Jean Berenson (mother)
Jake Berenson (brother)
Rachel (cousin)
Jordan (cousin)
Sara (cousin)
Dan (uncle)
Naomi (aunt)
George (uncle)
Ellen (aunt)
Saddler (cousin)
Justin (cousin)
Brooke (cousin)
Forrest (cousin)
Grandpa G (grandfather)
Isaiah Fitzhenry (great-great-great-granduncle)




The Sharing
Yeerk Empire

Behind the scenes
First appearance

The Invasion

Last appearance

The Beginning


Killed by Rachel


Joshua Peace

"Not Jake. Leave Jake alone. Leave my brother alone. I'll... look, I'll never trouble you again. I swear it. Just leave Jake alone."
―Tom pleading to Temrash 114[src]

Tom Berenson is Jake's older brother. He is also a Controller and the primary reason Jake became involved in the war.



Tom Berenson is the oldest son of Steve Berenson and Jean Berenson, and Jake's older brother. He's also Rachel, Saddler, Jordan and Sara's cousin.

Tom Berenson

Tom Berenson

Life as a ControllerEdit

Tom had initially joined the Yeerk front organization, The Sharing, and became a Controller sometime before the Animorphs met Elfangor because he wanted to spend time with a girl he liked, who was already a Controller at the time.[1] Tom originally resisted being infested, but eventually complied in order to stop his brother, Jake, from being infested for the time being.[2]

During the Animorphs' first raid on the Yeerk pool, Tom is cut loose from a cage and rides on the back of Jake's tiger morph. As the Animorphs and several Controllers are escaping, Visser Three runs up the staircase and Tom attempts to fight him with his bare fists. Visser Three, apparently not wanting to waste a human host, simply sends him falling down the staircase with a side tail blade blow to the head.[1]

Tom's first Yeerk was Temrash 114, a high-ranking Yeerk in The Sharing, but ranked lower than a Sub-Visser in the Yeerk military, who was promoted and assigned the task of infesting the governor of their state. However, thanks to the Animorphs' interference, Temrash temporarily infested Jake and was subsequently killed via Kandrona starvation. With Temrash's promotion, Tom was infested by another low ranking Yeerk instead.[2] This Yeerk would go on to become a major antagonist in the final part of the series.


Tom's new Yeerk was eventually given the morphing cube by Cassie because she thought that it was the right thing to do and that it would stop Jake from killing Tom. The Yeerks use the morphing technology, however, to fight against the Animorphs.[3] After the end of the war, only a few Yeerks use the morphing technology to become nothlits.[4]

Eventually, Tom's band of morphing Yeerk-Controllers stole Visser Three's Blade ship and attempted to destroy the Animorphs who had captured the Pool ship. The Pool ship's weapons were disabled because of Erek's programming to never harm another being, so Jake had to send Rachel aboard the Blade ship to kill Tom. Although Rachel succeeds in her mission, her grizzly form impaling Tom in cobra morph with her claws and finally biting down on him, she subsequently demorphs and is killed by one of his other Yeerk allies in polar bear morph.[4]

Tom's MorphsEdit

Battle Morph(s): Jaguar, cobra

Raptor Morph: Eagle or falcon

Morph Book Acquired
Eagle or Falcon (possibly) The Sacrifice
Jaguar The Answer
Cobra The Beginning


  • Jake is infested by the same Yeerk that once infested Tom, and that is what helps reveal that Tom is infested again. The Yeerk torments Jake telling him how he broke Tom and how he would eventually break Jake. The Yeerk is discovered by Ax and is starved of Kandrona for three days and dies. Later Jake calls Tom and tells him to never stop fighting and he was not alone, and manages to hide his voice by half morphing a wolf.
  • In the Animorphs (TV series) Tom's Yeerk receives the call from Jake, hangs up and his hand starts shaking violently. The Yeerk closes his hand once to regain control. This shows Tom resisting his Yeerk and his fight boosted from Jake's call.
  • Also in the TV series he and Melissa Chapman are shown to have a short love affair in the episode The Front.



  1. 1.0 1.1 The Invasion
  2. 2.0 2.1 The Capture
  3. The Sacrifice
  4. 4.0 4.1 The Beginning