The Brain

A genetically altered lab mouse with a large head who plans to - you guessed it - Take Over the World (OF COURSE!). Voiced by Maurice LaMarche.

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Tropes associated with The Brain:

• Affably Evil
• Anti-Hero (Type IV)
• Anti-Villain: Hybrid of Type I and Type III. See Well-Intentioned Extremist below.
• Are You Pondering What I'm Pondering?: The Trope Namer.
• Cartoony Tail: He has a tail like a real mouse, except it is kinked in a way that it looks like stair steps.
• Cassandra Truth: Quite often, Brain will be forthright with people that he and Pinky are lab mice scheming to take over the world. Whoever he says this to thinks he's just joking around.
• Deadpan Snarker
• Evil Albino: Well, maybe "evil" is a bit exagerrated.
• Even Evil Has Standards: His refusal to sell his soul for world domination in the Halloween Special.
• Heroic Albino
• Heterosexual Life Partners: With Pinky.
• Hidden Heart of Gold
• Hoist by His Own Petard: Usually fails becomes something he did boomerangs on him, such as trusting Pinky with a crucial part of the plan.
• Insufferable Genius
• Jerk with a Heart of Gold
• Large Ham
• Little Guy to Pinky's Big Guy
• No Celebrities Were Harmed: Orson Welles. One segment even had Brain mimicking the "frozen peas" take.
  • Possibly Maximilien de Robespierre as well. Very similar personalities and goals to take over the world.
• Noble Demon: Wants to conquer the world to make it a place of kindness, equality and happiness for all.
• The Millstone: Sometimes. Not as much as Pinky, though.
• Shorter Means Smarter
• Well-Intentioned Extremist: It's not often you get a character who wants to Take Over the World so he can change it for the better, but there you go.
• Verbal Tic: Yes!
• Villain Protagonist: Could be interpreted this way.
• Vitriolic Best Buds: Type I: Brain supplies all the vitriol, Pinky just thinks they're best buds.

Pinky

The Brain's dim-witted assistant. Voiced by Rob Paulsen.

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Tropes associated with Pinky:

• Anti-Hero (Type I)
• Anti-Villain: IV
• Big Guy to Brain's Little Guy
• Cloudcuckoolander
• Dumbass Has a Point: Often thinks to ask logical questions about the logistics of a plan. Brain will usually have thought of that himself, but points to Pinky for not needing to be prompted.
• Even Evil Has Standards
• Evil Albino: Well, maybe "evil" is a bit exagerrated.
• Fake Brit: Rob Paulsen as Pinky
• Heroic Albino
• Heterosexual Life Partners: With Brain.
• Interspecies Romance: With Phar Fignewton (a horse), of course, but also with a sealion and a pig in other episodes (unsuccessfully).
• Noble Demon
• The Dragon/The Lancer
• The Millstone
• Too Kinky to Torture
• Verbal Tic: Narf! Zort! Egad! Poit! Troz!
• Villain Protagonist
• Vocal Evolution: Pinky's speech impediment is more pronounced in the earliest segments.

Snowball

A hamster who was put through the same gene splicer as the mice and also schemes to Take Over the World, but does not intend on making it a better place like Brain would. As such, he is The Rival to the Brain. Was eventually changed back to an ordinary hamster in his last appearance. Voiced by Roddy Mac Dowall.

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Tropes associated with Snowball:

• Brought Down to Normal
• Evil Brit
• Evil Genius
• Killer Rabbit
• The Rival/Rival Turned Evil

Billie

Another genetically altered lab mouse that Brain sometimes romantically pursued, despite her being as ditzy as Pinky. (Does This Remind You of Anything??) Voiced by Tress MacNeille.

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Tropes associated with Billie:

• Distaff Counterpart: To Pinky.
• Genius Ditz
• Love Dodecahedron: Between her, Brain, Pinky, Phar Fignewton and Snowball.

Phar Fignewton

A grey and white race mare (female horse) whom Pinky fell in love with in the segment "The Kentucky Derby". The relationship between them obviously Squicks Brain.

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Tropes associated with Phar:

• Blue Eyes
• Interspecies Romance: With Pinky (a mouse).
• Nearly Normal Animal
• The Voiceless

Roman Numeral 1 "Romy"

A clone of both Brain and Pinky created from their combined DNA. (Does This Remind You of Anything?)

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Tropes associated with Romy:

• Cloning Blues
• Does This Remind You of Anything?: Romy's "birth" in the episode "Brinky".
• Interspecies Romance: with Pat "the Bunny" (a human).
• Mix-and-Match Man

Brain's Parents

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Tropes:

Pinky's Parents

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Tropes:

• Cloudcuckoolander: It's clear where Pinky gets it from... if anything, his parents are worse.
• Cross-Dressing Voices: Eric Idle plays both Pinky's mother and father.
• Hey, It's That Voice!: Eric Idle.

Pinky's "Sister"

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Tropes:

• Companion Cube: "She's" a spool of thread.

Larry

A dopey chubby mouse with frizzy hair that sticks out in the sides like Larry Fine of the Three Stooges, he accompanied the duo during one of their schemes, he did little except constantly introduce himself and provide useless observations, eventually Brain tires of him and tells him to leave, he later joins up with Paul Simon. He was voiced by Billy West.

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Tropes associated with Larry:

• Catch Phrase: "Hi there!", "Hello!", and "I'm Larry!"
• Furry Baldness
• Green Eyes
• My Friends... and Zoidberg
• No Celebrities Were Harmed: Larry from The Three Stooges
• Shoo Out The New Guy: Parodied

Trudy

A black-haired mouse from the black and white Pinky and the Brain episode, "The Third Mouse."

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Tropes:

• Furry Female Mane
• Humanoid Female Animal
• Petting Zoo Person

Mousey Galore

Russian lab mouse and rival to Pinky and the Brain in "To Russia With Lab Mice".

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Tropes:

• Furry Female Mane
• Humanoid Female Animal
• Petting Zoo Person

Dr. Mordough

The scientist who built the gene splicer that turned Brain, Pinky, and Snowball into their anthropomorphic forms. Appears only in part 3 of "Brainwashed".

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Tropes associated with Dr. Mordough:

• No Celebrities Were Harmed: Marlon Brando.

The Evil Clown

Precious's confidant.

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Tropes associated with The Evil Clown:

• The Dragon: To Precious
• Everyone Calls Him Barkeep: His name is never given. In fact, his name was shown only on Kids' WB!'s website.
• Evil Clown

Precious

Dr. Mordough's cat who was the Evil Mastermind of the scheme the mice had to foil in "Brainwashed". Like the mice, she too gained brainpower from the gene splicer, but lost her feline beauty and swore vengeance on humanity as a result. Voiced by Nora Dunn.

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Tropes associated with Precious:

• Cats are Mean: Though originally averted.
• Green Eyes And Red Fur
• Partially Civilized Animal
• Roaring Rampage of Revenge

Zalgar

A humanoid alien who scouts planets to eat the being with the highest intellect's brain, he attempts to steal Brain's after sending him an email promising to help him take over the world, after his defeat he decides to settle for Dick Cavett's. Voiced by Jeff Bennett

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Tropes associated with Zalgar:

• Brain Food:
• Early-Bird Cameo: He originally appeared in the Animaniacs episode "Potty Emergency" in a sci-fi movie the Warners were watching.
• Little Green Men: His minions Synapse (Whose brain he's already eaten) and Neuron
• What Could Have Been: There were originally plans for him to have his own spin off.

Elmyra Duff

The annoying redhead from Tiny Toon Adventures. She turned up to chase the Warners in one of their segments, but is listed here because of her being shoehorned into Pinky and the Brain. Voiced by Cree Summer. See Tiny Toon Adventures for her tropes.

Mr. Pussy Wussy

Elmyra Duff's pet cat.

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Tropes associated with Mr. Pussy Wussy:

• Suspiciously Similar Substitute: To Furrball.

Mr. Shellbutt

Elmyra Duff's pet turtle.

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Tropes associated with Mr. Shellbutt:

• Suspiciously Similar Substitute: To Tyrone Turtle.

Rudy Mookich

A fat slob who replaced Montana Max as Elmyra's love interest in Pinky, Elmyra and the Brain. Has the hots for Brain's occasional alter-ego, Patty Ann. Voiced by Nancy Cartwright.

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Tropes associated with Rudy:

• Ambiguously Gay: He must be this if he's willing to fall for a mouse-haired girl who speaks with a clearly male voice.
• Expy (of Nelson Muntz)
• Replacement Love Interest
• Suspiciously Similar Substitute: He doesn't like Elmyra any more than Max did.

Vanity White

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Tropes associated with Vanity:

• No Celebrities Were Harmed: Vanna White.

Wally Faust

The seldom-seen antagonist of Pinky, Elmyra and the Brain, he is a man pursuing the mice to use in his own world domination schemes. Voiced by Jeff Bennett.

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Tropes associated with Wally:

• No Celebrities Were Harmed: Christopher Walken.