Characters: Extreme Ghostbusters

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    The Ghostbusters 

Egon Spengler

Voiced by: Maurice LaMarche

  • Badass Grandpa: Even in his late thirties (as stated in "The Sphinx"), he's still capable of entering the field when he needs to.
  • Cool Old Guy: He is one of the co-founders of the Ghostbusters, after all.
  • Mentor Archetype / The Obi-Wan: To the younger Ghostbusters.
  • Retired Badass: He starts the series as a teacher at New York University and also watches over the Containment Unit after the other original Ghostbusters leave to follow other pursuits. However, he won't hesitate to venture out into the field when he has to.
  • Riddle of the Sphinx: He figures it out in "The Sphinx."
  • Sesquipedalian Loquaciousness: He sometimes speaks this way. Lampshaded when Eduardo asks Kylie to translate his "Egonics."
  • Specs of Awesome: Has acquired these over the years.

Janine Melnitz

Voiced by: Pat Musick

Roland Jackson

Voiced by: Alfonso Ribeiro

The team's tech expert and unofficial leader after Egon, responsible for getting the Ecto-1 back in working order (and also installing a wheelchair ramp for Garrett) and doing the lion's share of upgrading the Proton Packs, PKE Meters and Kylie's Ghost Trap. Like Winston, Roland treasures the Ecto-1.

Kylie Griffin

Voiced by: Tara Strong

A Goth who was a big believer in ghosts and the supernatural even before joining the team; she's as knowledgeable in these areas as Egon (her idol) or Ray. She has a weaker and lighter Proton Gun than her teammates, but she's also the one who carries the Ghost Trap. When the team encounters unknown threats in the field, she's the most likely one to identify and strategize around them (or at least translate Egon's words to the others).

Eduardo Rivera

Voiced by: Rino Romano

A slacker who only joined Egon's class for the "E-Z-A." He initially did not believe in ghosts but this changed when he had to go face-to-face with one. Like Peter, Eduardo can act like a smart alec at times and often speaks for the group, out of turn, he is also a frequent target of Slimer's pestering. His Catch Phrases are "Maybe he's/she's dead" and "We're scientists."

Garrett Miller

Voiced by: Jason Marsden

Born a paraplegic, he's the jock of the team who is the most gung-ho about busting ghost tail. His attitude and demeanor are similar to Ray and Peter put together.
  • Ascended Fanboy: He was a huge fan of the Ghostbusters; now, he's a member of the new team.
  • The Big Guy: He is the most athletic and aggressive of the group.
  • Boisterous Bruiser: He just loves busting ghosts—and showing off how Badass he is with a variety of crazy stunts.
  • Bond One-Liner: He often gives these when he captures ghosts.
  • Claustrophobia: His biggest fear.
  • Composite Character: Combines Stantz's love for his ghostbusting career with Venkman's cockiness.
  • Disabled Means Helpless: Garrett shows he's quite capable and self-reliant despite his paralysis. However, in "Grease," he fakes this trope just long enough to escape from two FBI agents.
  • Disabled Snarker: Garrett, a paraplegic, likes to make with the dry and witty remarks.
  • Handicapped Badass: Don't let his handicap fool you; Garrett can kick lots of ghost ass.


Voiced by: Billy West

  • Brainwashed and Crazy: In "Slimer's Sacrifice," Slimer is brainwashed by Surt to attack Eduardo.
  • Category Traitor: Surt even lampshades this in "Slimer's Sacrifice."
  • Heroic Sacrifice: In the appropriately-titled "Slimer's Sacrifice," he flies into the Containment Unit to keep all the other ghosts from getting out after a faulty ghost trap causes things to go haywire.
  • Non-Human Sidekick: To the Ghostbusters. He's a ghost and they're humans.



Voiced by: Susan Tyrrell

A Mesopotamian spirit trapped inside a stone tablet. The main antagonist of the two-part premiere episode "Darkness at Noon."
  • Body Horror: The disease she spread caused victims to grow green patches with pulsing boils on them. It gets worse later on with the revelation that the boils are her offspring.
  • Demonic Possession: She possessed Kylie for a brief time.
  • Flight: Displayed this power.
  • Plague Master: Spread a virus (see Body Horror above for details).
  • Sealed Evil in a Can: Until construction workers breached her prison.
  • Shock and Awe: Her minions (attached to her body) could electrocute people.
  • Starter Villain: Achira is the first villain to be faced by the new ghostbusting team.
  • The Virus: Achira spread a virus that was actually her offspring.
  • Voluntary Shapeshifting: Achira made herself appear as Grandma Rose to Kylie so she could get close enough to possess her.


A gigantic creature created by a Jewish rabbi to defend a synagogue against anti-Semitic vandals. The main antagonist of "The True Face of a Monster."

Fear ghost

A spirit that brings people's worst fears to life. The main antagonist of "Fear Itself."
  • Harmless Villain: When the Ghostbusters finally confront it, it cowers in fear and does not fight back.

Crainiac, Corpuscle, and Gristle

The creations of horror novelist J.N. Kline. The main antagonists of "Deadliners."


The ruler of another dimension that strongly resembles Hell. The main antagonist of "Casting the Runes."

Kahlil's messenger

Kahlil's minion. Appears in "Casting the Runes."


A spirit that can possess machinery. The main antagonist of "The Infernal Machine."

Le Maison

The main antagonist of "Home is Where the Horror Is."

Evil Clowns

The main antagonists of "Killjoys."
  • Monster Clown: They disguise themselves as clowns to get people to laugh so they can eat them alive.
  • Our Vampires Are Different: Kylie surmises that they are a vampire analogy that feed on laughter instead of blood.


An ancient spirit that stole the eyes of anyone who gazed upon its orb. The main antagonist of "The Unseen."


Voiced by: Fernando Escandon

The main antagonist of "The Crawler."


Voiced by: Roger Rees

The main antagonist of "The Pied Piper of Manhattan."
  • Humanoid Abomination: Until his true form is revealed, he looks indistinguishable from a normal human.
  • Would Hurt a Child: He attempts to drown New York's children when the mayor refuses to give in to his demands.

The Salesman / Duophanes

Voiced by: Jonathan Harris

The main antagonist of "Be Careful What You Wish For."
  • Hoist by His Own Petard / Logic Bomb: He is defeated when Kylie wishes that he doesn't grant her wish, the confusing nature of the paradoxical wish causing him to reveal his true form and become easy to trap.

Jersey Devil

The main antagonist of "The Jersey Devil Made Me Do It."

Dry Spell ghost

The main antagonist of "Dry Spell."


Voiced by: Mary Kay Bergman

The main antagonist of "Sonic Youth."


Voiced by: Melissa Disney

Banshee's sister, she is a popular singer who gains a huge following. Appears in "Darkness at Noon" and "Slimer's Sacrifice."


Voiced by: Clancy Brown

The main antagonist of "Ghost Apocalyptic Future."


The main antagonist of "Bird of Prey."
  • Giant Flyer: The Harasvelg is a giant, bird-like creature.


The main antagonist of "Seeds of Destruction."


The main antagonist of "Luck of the Irish."

Mirror Demon

Voiced by: Glenn Shadix

The main antagonist of "The Ghostmakers."


The Mooks of the Mirror Demon in "The Ghostmakers."
  • Grand Theft Me: Their modus operandi. They kick people's souls out of their bodies and inhabit said bodies.


Appears in "Slimer's Sacrifice."


The main antagonist of "Slimer's Sacrifice."

The Grundel

The main antagonist of "Grundelesque."


Appears in "Grundelesque."


The main antagonist of "In Your Dreams."
  • Hoist by His Own Petard: His plan to cross over into the real world through people's dreams would have worked if it weren't for the Ghostbusters immediately realizing that crossing over made him trappable and capturing him on the spot.


The main antagonist of "Moby Ghost."

Mountain Spirit (Radioactive Ghost)

Gu Mo

Ghost Bride



  • Sadly Mythtaken: The actual Ravana was a humanoid being with many heads rather than a cat-like demon who switched between fat and skinny forms.
  • Villainous Glutton: He possesses people in a way that makes them devour food endlessly.

Oil Mine Ghost


The Mistress

Energy and Lightning Demons



The main antagonist of "Back in the Saddle, Part Two."


The main antagonist of "The Sphinx."


Voiced by: Ron Feinberg

The main antagonist of "Witchy Woman."

    Other Characters 

Mayor McShane

Voiced by: Billy West

  • Arbitrary Skepticism: Absolutely refuses to believe in the paranormal despite having interacted with Piper and later being captured by a Leprechaun.
  • Jerkass: To the Ghostbusters.
  • Ungrateful Bastard: In "Luck of the Irish," after the Ghostbusters save him from the Leprechaun, he takes all the credit.


  • Evil Former Friend: To Garrett.
  • Jerkass: He shows disdain towards Roland and is later revealed to be one of the jerks who attacked the Jewish synagogue.
  • We Used to Be Friends: With Garrett by the final act of "The True Face of a Monster."

J.N. Kline

Steve Rifkin

Francois Rousseau

Jack Stone and Harry Gannan


Voiced by: Tony Jay

Leonard Bates


Edward Kirilian

Voiced by: John de Lancie

  • Mad Scientist: There's not much else you would call a man who attempts to use special collars to enslave the spirit world.
  • Mind Control: Kirilian used devices to control ghosts and have them do his bidding.
  • We Used to Be Friends: With Egon.

Wanda, Celina, and Bess

  • Body Horror: After Eduardo completes their circle and Cernunnos manifests in our reality.
  • Deal with the Devil: They make one with Cernunnos in "Witchy Woman."