Now was that civilized? No, clearly not; fun, but in no sense civilized
—The Brain Gremlin

The Brain Gremlin (or just simply Brain) is the main antagonist in Gremlins 2: The New Batch, the secondary antagonist being Mohawk. He is a brown mutated gremlin who wears glasses and later on more formal clothing. He has a well-spoken human voice which he got after consuming a beaker full of mutagenetic brain hormone serum in the Clamp Center laboratory, which also had the effect of greatly increasing his intelligence. Afterwards, he dressed more like a human, wearing very business-like clothing and even gaining spectacles that had appeared from no known location or source. Although he is a villain, he is very articulate and cultured for a gremlin, though his mischievous nature still prevails. He does not appear to be as destructive as the other gremlins and appears to be somewhat fascinated by the humans' culture and way of life.

Gremlins 2

Brain Gremlin originally started as a normal gremlin, spawned from whether one of the three gremlins, Lenny, Daffy or George.

He drank a potion called The Brain Hormone, created by Dr. Catheter. The hormone made the gremlin go through a process, where he gained glasses in the process. He then has an increased intelligence and immediately talks to the scientists in the lab (who are too scared to even respond): " a little bit about what's going around in this room because, I think there's some fascinating remications here for the future.

Would you introduce new genetic material research quality to a life form such as ours' which is possessed as a..a sort of..I hesistate to use the word atavism, but let us say a highly-aggressive nature. For example, for that fellow near believe that's a common bat of the order Chiroptera, the only mammal I might add capable of flight". He later finds genetic sunblock, the cure for the Gremlins' weakness of sunlight, which will allow them to escape the building unharmed.

He injects genetic sunblock into a gremlin who drank a substance that morphed it into a half-bat hybrid. He instructs the Bat Gremlin to fly out of the building to check if it's sunlight still, and the scientists are unable to catch the Bat Gremlin. Later, several gremlins attack and slaughter people, while the Brain Gremlin helps his team of monsters win, although he doesn't attack people since he develops a fond nature of manners and the desire of having his team civilized.

The Brain Gremlin wanted his species, the Gremlins, to be civilized, the definition is to no longer be primitive and violent, and become more advanced and become an animal race of superiority and power. He explains this when a monster-movie TV show host named Fred and cameraman Mr. Katsuji make an interview with the Brain Gremlin. The Brain Gremlin answers that civilization is the answer, explaining that the gremlins are vicious monsters that are primitive and violent because they're not civilized, and shows an example of a gremlin who is annoying and acts crazy next to him, which he later kills with a gun.

He was later seen singing New York, New York with several gremlins (around 200 to 300 gremlins were inside the building), and they were ready to leave the building. However, when they plan to exit the building so that New York City will no longer have human existance and instead replaced by a civilization of gremlins, Billy Peltzer absorbed a gremlin who drank an electric potion (turning the gremlin into raw electricity), into a telephone, and his friends Kate Peltzer and Murray Futterman help him to stop the gremlins. Murray sprays the gremlins with water as the Brain Gremlin becomes the first to get blasted by water, and Billy aims the Electric Gremlin at them. The wet gremlins all explode and melt due to the result of electricity and water. The Brain Gremlin tries to finish singing the song New York, New York, with his dying words were "New York... New York..." till his voice was gargling again and lost his human voice, before he fell to the ground dead.


  • He is a fan favorite among the Gremlins 2 fans.
  • Brain's clothing while singing "New York, New York", like the song, is a homage to Frank Sinatra.
  • In the original draft, Brain was supposed to have a different death: After singing "New York, New York", Gizmo shoots a dart that injects him with a helium serum, causing him to bloat like a balloon and float out a window to his doom. This scene was cut and never filmed.
  • Brain is the first leader to not be spawned from Gizmo. He was spawned from one of the other gremlins
  • In the novelization of the film, his name was Mr. Glasses
  • He never seems to mention the bat gremlin after its death.
  • He makes a brief cameo in the Gremlins 2: The New Batch (video game), where he appears in a card where the player chooses to Continue the Game or Quit the Game when he/she pauses. He does not appear in the video game's story however which makes little sense as he is the main antagonist of the film.
  • Along with the Vegetable Gremlin, he is the only mutated Gremlin to have become wet in the film, and he most likely spawned more Gremlins. It is unknown what happens to mutated Gremlins if they get wet, as they might pass down the same traits to their clones. He possibly spawned more Gremlins with higher intelligence or he spawned normal Gremlins or neither really since the gremlin foetus' where all killed along with him.
  • During the interview scene of Gremlins 2: The New Batch several studio lights are seen shining down on the Brain Gremlin, even though gremlins are harmed by bright light, perhaps the Brain could have injected himself with the Genetic Sunblock as he did to the Bat Gremlin. This could also just be a plot hole in the film.
  • In Gremlins 2: The New Batch, he was voiced by the late Tony Randall. In LEGO Dimensions, he is voiced by Christopher Swindle.
  • Tim Curry was considered for the voice of the Brain Gremlin but Tony Randall already has the part.


See Brain Gremlin/Gallery