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Seth Green: Real Name, Voice Roles, Buffy & 2026 Facts

Henry Morgan Clarke • 2026-10-16 • Reviewed by Maya Thompson

If you’ve ever tried to settle a trivia argument about the voice of Chris Griffin, you already know how quickly Seth Green’s story gets tangled with the characters he plays. One search asks for his real name, another wonders whether the Joker from Mass Effect is the one with a medical condition, and a third insists he was in The Simpsons. Here’s what the records actually show, with the search confusions separated from the confirmed facts.

Born: February 8, 1974 ·
Birth name: Seth Benjamin Gesshel-Green ·
Known for: Buffy, Austin Powers, Family Guy, Robot Chicken ·
Mass Effect role: Jeff “Joker” Moreau ·
Family Guy role: Chris Griffin ·
Married: Clare Grant since 2010

Quick snapshot

1Confirmed facts
  • Born Seth Benjamin Gesshel-Green on February 8, 1974 (TV Guide bio)
  • Voices Chris Griffin on Family Guy (IMDb bio)
  • Played Oz on Buffy the Vampire Slayer (People)
2What’s unclear
3Timeline signal
4What’s next
  • Record points to continued animation and voice work (IMDb bio)
  • Specific 2026 projects need dated announcements (IMDb bio)

Six facts anchor most Seth Green searches, and one pattern stands out: the actor, the characters he voices, and the name-change questions keep colliding in the same queries.

Label Value
Full name Seth Benjamin Gesshel-Green
Date of birth February 8, 1974
Place of birth Philadelphia, Pennsylvania
Occupation Actor, voice artist, producer, writer, director
Spouse Clare Grant, married 2010
Notable roles Oz in Buffy, Scott Evil in Austin Powers, Chris Griffin in Family Guy, Joker in Mass Effect

What is Seth Green’s real name?

The short answer is that Seth Green was born Seth Benjamin Gesshel-Green on February 8, 1974, in Philadelphia. The long answer includes a hyphenated surname, a shortened stage name, and a character detail that keeps pulling people toward the wrong conclusion.

Why did Seth Green change his name?

  • Legal name at birth: Seth Benjamin Gesshel-Green (TV Guide bio)
  • Professional name: Seth Green, a practical shortening of the full surname
  • Search trap: the Mass Effect character Joker has the canonical name Jeff Moreau, which is separate from the actor’s birth name

The name change is a professional shortening, not a legal secret. “Gesshel-Green” is long for a marquee, and Seth Green reads cleaner on a poster. That’s the whole story.

The pattern matters because the hyphenated surname collides with the character question: when someone searches “Seth Green real name,” they often expect a dramatic reveal. The reveal is just a shorter version of the name he was born with.

What characters has Seth Green voiced?

Voice work is where Seth Green has built the longest and most durable part of his career. He is the voice of Chris Griffin on Family Guy, the voice of Jeff “Joker” Moreau in Mass Effect, a frequent presence in the Scooby-Doo franchise, and a major creative force behind Robot Chicken.

Who voices Joker in Mass Effect 1?

Why this matters

The Joker voice is the answer to one of the most searched Mass Effect questions, and it’s a two-part answer: the actor is Seth Green, and the character’s canonical name is Jeff Moreau.

Seth Green voices Joker in Mass Effect 1 and continues in the role through later entries in the trilogy. The character is the Normandy’s pilot and the crew’s resident smart-mouth, and his brittle-bone condition is part of the in-game lore that feeds health-related search queries. The credit appears alongside his other voice work in his IMDb bio.

What is Seth Green’s role in Family Guy?

  • Character: Chris Griffin, the awkward teenage son
  • Tenure: a main cast role since the show’s inception (IMDb bio)

Chris Griffin is the character Green has voiced for the longest continuous run of his career. The role has outlasted live-action phases, and it’s the one that younger viewers most often associate with his name.

Which Scooby-Doo character does Seth Green voice?

  • Multiple Scooby-Doo productions list Green in voice roles
  • The exact character changes by project, so the better answer is “several,” not one

Scooby-Doo credits are scattered across direct-to-video releases and series appearances. The franchise appears in his long animation résumé, but the specific characters vary enough that a single-name answer would overstate the record.

How does Robot Chicken fit in?

  • Co-creator, executive producer, writer, director, and primary voice performer (IMDb bio)
  • The show debuted on Adult Swim in 2005 (NNDB profile)

Robot Chicken is the clearest sign of Green’s influence behind the camera. TV Guide’s bio credits him with three Annie Awards for the series, placing the stop-motion show at the center of his professional recognition.

What this means: Green’s voice résumé is broad enough that people mix up the characters. The reliable anchor is the credit list, not the memory of a guest spot.

Bottom line: Seth Green’s voice career is defined by long-running roles in Family Guy, Mass Effect, and Robot Chicken. For trivia researchers, the credit list beats memory; for animation fans, the Robot Chicken credits are the strongest proof of his range.

Was Seth Green in The Simpsons?

Short answer from the available records: no confirmed The Simpsons credit appears in the provided data. The rumor survives because Green has voiced characters across dozens of animated shows, and any long animation resume invites Simpsons speculation.

What movies and TV shows has Seth Green appeared in?

  • Radio Days (1987) — child role
  • Austin Powers series — Scott Evil, Dr. Evil’s son
  • The Italian Job (2003) — computer specialist
  • Early credits are collected in his NNDB profile

Television is where the list gets longer: Buffy the Vampire Slayer, Family Guy, Robot Chicken, and a string of guest spots that run from drama to comedy to animation. The volume of work is exactly why a single unverified credit becomes hard to shake.

The Simpsons question, then, is a reminder that credit lists are the referee. The supplied cast records do not include a confirmed The Simpsons appearance, and no verified source in the research notes backs one.

The catch

A long career invites false memories. Until a cast list appears, the answer to “Was Seth Green in The Simpsons?” is “no verified credit.”

The takeaway: any animation guest-star rumor needs a dated cast list before it becomes a fact.

Why was Seth Green written off Buffy?

Seth Green played Daniel “Oz” Osbourne on Buffy the Vampire Slayer, first appearing in Season 2 in a recurring role. People’s reporting says he became a main cast member in Season 3 and left partway through Season 4.

What was Pedro Pascal in Buffy?

Timeline signal

Pedro Pascal appears as Eddie in “The Freshman,” the Season 4 premiere — the same season Green’s Oz departs.

The episode is a fan-favorite clue because it places Pascal and Green in the same season, even though their characters don’t have a major scene together.

Which Buffy episode was banned?

  • Episode: “Earshot”
  • Context: pulled and delayed because its school-shooting themes hit close to Columbine
  • Outcome: eventually aired

The word “banned” overstates it. The network delayed the broadcast, not erased it. The episode was scheduled before the Columbine tragedy and pulled out of sensitivity, then aired later in the season.

Why did Sarah Michelle Gellar quit Buffy?

The upshot

Gellar didn’t quit mid-story; Buffy concluded after Season 7, and the cast moved on as the series reached its planned end.

“Quit” is the wrong frame for a show that ended after seven seasons. The series finale gave Buffy a closing arc, and the production wrapped as a completed story.

Oz’s departure is a character decision. He becomes a werewolf, and his fear of hurting the people he loves leads him to leave Sunnydale. Wikipedia’s Oz profile tracks the werewolf arc, and People confirms that Green later reprised Oz in the Angel episode “In the Dark.”

Why this matters: the Buffy question isn’t a single exit story. It’s a season-long arc, a delayed episode, and a guest appearance in Angel — and that’s why search results keep drifting among them.

Bottom line: Oz left because the story made him a werewolf who needed to go. For Buffy fans, that character exit, not a feud, is what the records support.

How long has Seth Green been with his wife?

Seth Green has been married to actress and producer Clare Grant since 2010. It’s a stable, low-drama bio point, which is exactly why it tends to get buried under the more colorful career questions.

Who is Seth Green’s wife?

  • Name: Clare Grant
  • Profession: actress and producer
  • Married: 2010 (TV Guide bio)

Grant has her own acting and producing credits, which is why the couple’s professional lives are often mentioned together.

Is Seth Green related to Macaulay Culkin?

The catch

No public family link connects Seth Green and Macaulay Culkin; the rumor appears to be a search-engine collision, not a family tree branch.

The two actors are both recognizable faces from 1990s pop culture, but the provided records show no documented family relationship.

How tall is Seth Green?

  • Height: not reliably documented in the supplied sources
  • Search answer: varies by database, with no official figure confirmed

Height is one of those trivia fields where celebrity databases repeat numbers without a primary source. Treat any answer as an estimate.

Related reading: Kristian Nairn: Hodor’s Height, Disability & Strictly Exit

What is Seth Green’s net worth?

  • Net worth: estimate only, and site-dependent
  • No official financial disclosure exists in the provided records

Celebrity net worth pages tend to make the same calculation look like a verified ledger. The honest label is “estimate,” not “fact.”

What this means: the marriage is the one confirmed bio anchor; height and net worth are the spots where low-authority databases fill the gap.

Bottom line: The marriage to Clare Grant is the one solid anchor in Seth Green’s personal-life record. Height and net worth, by contrast, remain estimate-only territory.

What condition does Seth Green have?

This is the question where the search engine and the bio diverge. The man does not have a widely reported medical condition; the character he voices does.

Does Joker have a medical condition in Mass Effect?

The distinction

Joker lives with Vrolik syndrome, a brittle-bone condition in Mass Effect’s fiction. Seth Green plays Joker; he doesn’t have the character’s diagnosis.

The in-game diagnosis is a fictional condition similar to osteogenesis imperfecta, and it belongs to Joker, not to the actor. No credible, well-documented report in the provided records says Seth Green has the same condition.

The implication: health-related search confusion here is a disambiguation problem, not a medical story. For anyone researching the character, the condition is real; for anyone researching the actor, it isn’t.

What happened to Seth Green?

The “what happened” search usually leads to a 2022 incident: the reported theft of a Bored Ape NFT that Green owned. It was widely covered as pop-culture and crypto news, and it still drives “what happened to Seth Green” queries.

What is Seth Green doing in 2026?

  • Career status: active in animation and voice production
  • Specific 2026 projects: no verified dated announcement in the provided records

The career hasn’t stopped. What’s missing is a 2026-specific announcement that can be verified, so the honest answer is “working, with details still emerging.”

Why this matters: “What happened” has a specific answer — a headline event — but the longer arc is a working actor who hasn’t disappeared.

Seth Green: key dates

One way to see the whole career is to line up the dates, and a single pattern emerges: the voice roles arrive early and stay, while the live-action roles come and go.

Date Event
1974 Seth Benjamin Gesshel-Green is born in Philadelphia.
Late 1980s Appears in Radio Days.
1997 Plays Scott Evil in Austin Powers: International Man of Mystery (NNDB profile).
1998-2001 Portrays Oz on Buffy the Vampire Slayer (People).
1999 Family Guy premieres; Green voices Chris Griffin.
2005 Robot Chicken premieres on Adult Swim.
2007 Mass Effect releases; Green voices Joker.
2010 Marries Clare Grant.
2022 Reports circulate about the theft of his Bored Ape NFT.
2026 Remains active in animation and voice acting.

The pattern: the heavy lifting comes from recurring voice roles, not one-off film appearances. The dates also show why “what happened” is a misleading question — there’s a decades-long list of work, interrupted by one headline-grabbing incident.

Confirmed facts vs. what’s unclear

Confirmed facts

  • Birth name, date, and place: Seth Benjamin Gesshel-Green, February 8, 1974, Philadelphia
  • Marriage to Clare Grant since 2010
  • Voice roles in Family Guy and Mass Effect
  • Buffy role as Oz
  • Pedro Pascal appears in “The Freshman”
  • No public family relation to Macaulay Culkin
  • Joker has Vrolik syndrome in Mass Effect

What’s unclear

  • Verified The Simpsons credit
  • Exact height
  • Exact net worth
  • Whether the “condition” search refers to the actor or the character
  • Specific 2026 projects without dated announcements
  • Whether Oz’s exit was planned as a long-term arc
  • Full list of Scooby-Doo characters he voices
  • Whether the 2022 NFT theft was fully resolved

The split is where the search confusion comes from: the confirmed facts outnumber the unclear items, but the unclear items are the ones people click.

Quotes: the actors behind the search results

People’s reporting on Green’s Buffy run states that he first appeared in Season 2 in a recurring capacity and only learned he would become a regular later.

People

Wikipedia’s Oz profile describes a character whose werewolf side forces him to leave Sunnydale and lose the relationship he had with Willow.

Wikipedia

The pattern across these quotes: what looks like a reveal is usually a confirmation of something already on a credit list.

Where the record stands on Seth Green

Related reading: Gillian Anderson Biography: Career, Personal Life & FAQ

The clearest picture is a working actor with a long, stable career and a search trail that keeps circling the same few characters. Fans chasing a definitive answer should trust primary bio records over celebrity-ranking sites, and keep Joker’s condition on the character’s side of the page. For anyone writing a biography of the actor, the decision is clear: verify each credit against a cast list, or risk repeating a search-engine rumor as fact.

Additional sources

en.wikipedia.org, ew.com, thepopverse.com

Frequently asked questions

Where was Seth Green born?

Philadelphia, Pennsylvania.

How old is Seth Green?

Born February 8, 1974, which makes him 52 in 2026.

Is Seth Green in Austin Powers?

Yes. He plays Scott Evil, Dr. Evil’s son, in the Austin Powers films.

Who created Robot Chicken with Seth Green?

Robot Chicken lists Seth Green as a co-creator; his collaborators are credited in the show’s production records.

What is Seth Green’s role in Robot Chicken?

He is a co-creator, executive producer, writer, director, and primary voice performer.

What does Joker suffer from in Mass Effect?

In the Mass Effect games, Joker has Vrolik syndrome, a fictional brittle-bone condition.

Who is Clare Grant?

Clare Grant is an actress and producer who married Seth Green in 2010.



Henry Morgan Clarke

About the author

Henry Morgan Clarke

We publish daily fact-based reporting with continuous editorial review.