Jenner

**Jenner** is the main antagonist of the 1982 animated adaptation of the Newbery Award-winning children's novel *Mrs. Brisby and the Rats of NIMH*, known as *The Secret of NIMH*. He is a power-hungry and evil rat of NIMH who betrayed his own kind due to his strong desire to remain in the rose bush, rather than leave to a better life in Thorn Valley, as promised by the elder leader; Nicodemus.

## Background

Jenner was one of many rats freed by Jonathan Brisby from NIMH. However, quite a few mice and rats died in the process of escaping. The survivors then moved into the Rose Bush which served as their home from then on. It is unclear about Jenner's movements prior to the film.

## Personality

Many would describe Jenner as evil, cunning, deceptive, scheming, manipulative, and even psychotic or sadistic. It is quite clear from early on that Jenner has some hostile intentions. But it is at the film's climax where he shows his true colors; Jenner is shown killing Nicodemus, trying to steal the Stone and battling Justin at the end of the film. It is during these events he seems to display psychotic behavior. What is also apparent is that he seems to have little control over his morality, that is if he possesses any.

## Role in the film

### *The Secret of NIMH*

Jenner first meets Mrs. Brisby when she comes to the rats to ask for help moving her home. Jenner concocts a plan on the spot to use this as an opportunity to get rid of Nicodemus; the leader of the rats whom he openly disagrees with. He immediately voices his support to help move the Brisby home under the impression that it would honor the late Jonathan Brisby. Mrs. Brisby was uneasy in Jenner's presence but thanked him anyway.

As Nicodemus and Mrs. Brisby are leaving for their boat ride, Jenner carefully explains his plan to his confidant Sullivan; to sabotage the operation by cutting the ropes that will be used to lift and move the Brisby home in the hopes that it will crush Nicodemus. Sullivan expresses reluctance to taking such a risk and when he asks what to do about Justin; the head of the rat guards, Jenner simply replies "Leave him to me."

During the moving of the Brisby home, Jenner and Sullivan stand ready to cut the ropes. The cement block house comes to hover directly above Nicodemus and Jenner cuts one of the lines. Sullivan decides to take no part in cutting the ropes after having second thoughts about killing Nicodemus. Furious, Jenner rushes forward and cuts the rope himself, dropping the Brisby home, and killing Nicodemus.

With Nicodemus dead and the rats fell into grief, Jenner uses the situation to declare himself as the new leader and persuade the others to return to the rose bush. Mrs. Brisby arrives during his speech and frantically warns the rats that NIMH will arrive in the morning to destroy the rose bush and any rats living within. Jenner attempts to discredit her saying she has become hysterical, but the rats believe her and decide they must leave. Enraged by her meddling, he attacks her with the intention of killing her. Sullivan alerts Justin to the attack, causing Justin to throw himself between Jenner and Brisby. As Brisby recovers from the initial violence, Jenner spots the necklace of power given to her by Nicodemus and moves to attack her again, desiring the magical item for himself. Justin tries to stop him, but he is thrown aside and wounded by Jenner. Jenner tackles Brisby as she's running away and violently manhandles her trying to get the necklace. Justin comes to her aid and the two rats engage in a sword fight right after Jenner slashes Sullivan across the stomach, mortally wounding him.

While they are dueling, Justin (having been fully aware of Jenner's growing resentment and animosity toward Nicodemus, coupled with having seen Jenner fly into a homicidal rage, attacking innocent creatures) correctly deduces that Jenner must have intentionally killed Nicodemus. Jenner does not even attempt to deny this, openly admitting to Justin that he killed Nicodemus, stating "I've learned this much; take what you can, when you can!" and only stops fighting when he is stabbed in the stomach by Justin. As Justin makes his announcement to the colony that they were going to leave the rose bush, Jenner sneaks up behind him atop a large stone and prepares to kill him from behind while Sullivan, who is dying, takes out a dagger. Mrs. Brisby gasps in terror and points up towards Jenner to warn Justin. Before Jenner can attack, however, Sullivan delivers the fatal blow to the nefarious rat, throwing his dagger which strikes Jenner in the back, causing him to fall over the stone to his death.

### The Secret of NIMH 2: Timmy to the Rescue

Strangely, Jenner's existence is never acknowledged again in the sequel.

## Trivia

* Jenner was voiced by actor Paul Shenar, who portrayed the Bolivian drug lord Alejandro Sosa (Scarface, 1983) and womanizer Alexander Cross (The Mask of Alexander Cross, 1977)
* In the Graphic Novels - Jenner plotted to have Revenge on Mrs. Brisby and Justin after Dragon the Catfound him outside the Farm.
* Jenner is somewhat similar to Scar from *The Lion King*: They both had black fur, they were first in line to be the next ruler until they were upstaged by the male leads (Jenner: Justin, Scar: Simba), both used the female leads as pawns in their plans, (Jenner: Brisby, Scar: Nala), commited tragic murders to the old rulers and claimed it to be an accident, (Jenner: Nicodemus, Scar: Mufasa) and got dispatched by their henchmen. (Jenner: Sullivan, Scar: Hyenas).
* In the novel *Mrs. Frisby and the Rats of NIMH,* Jenner a minor character.  He is not seen, except in a flashback narrated by Nicodemus.  In the novel he begins as Nicodemus' friend during the rats' escape from NIMH, but starts to grow apart when he opposes Nicodemus' plan to leave the farm and live independently. Jenner prefers to stay on the farm and slowly drive the humans out.  Eventually he leads a splinter group of rats away to start their own colony.  Later it is heard that a number of rats were found electrocuted in a hardware store, but whether or not this is Jenner's group is uncertain.
* Jenner become Thomas and Twilight Sparkle's enemy in *Thomas and Twilight Sparkle's Adventures of the Secret of NIMH.*
* Jenner returns to get revenge on Thomas, Twilight Sparkle and their friends for foiling his plans to stay in the rose bush in Thomas and Twilight Sparkle's Adventure Series.
* Jenner is similar to Niju from *Balto 2: Wolf Quest* since they want to take over as leader of their groups to stay in one place. The only difference is that Jenner likes being in the rose bush while Niju has a fear of change.

## Gallery

Jenner with Sullivan.Jenner with Mrs. Brisby.Jenner plotting to kill Nicodemus."Cut the lines, and the weight of it will crush his bones!""Don't get any ideas my friend. You're in this up to your neck!"Jenner snapping upon hearing Mrs. Brisby's warning.Jenner noticing Brisby's magic ruby necklace.Jenner attacking Mrs. Brisby for her magic necklace.Jenner slashing Sullivan for his betrayal.Justin vs. Jenner."I've learned this much: Take what you can, when you can!"Jenner in painJenner prepares to kill JustinSullivan's dagger strikes Jenner's back.Jenner falling off the rock to his death.Jenner's death