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Seth Benjamin Green (né Gesshel-Green; born February 8, 1974) is an American actor. His film debut came with a role in the comedy-drama film The Hotel New Hampshire (1984), and he went on to have supporting roles in comedy films throughout the 1980s, including Radio Days (1987) and Big Business (1988). During the 1990s and 2000s, Green began starring in comedy films such as Idle Hands (1999), Rat Race (2001), Without a Paddle (2004), and Be Cool (2005). He also became known for his portrayal of Scott Evil, Dr. Evil's son, in the Austin Powers film series (1997–2002). Green has also taken serious roles in films, including The Attic Expeditions (2001) and Party Monster (2003). He has provided the voice for Howard the Duck in a number of Marvel Cinematic Universe films and series, including Guardians of the Galaxy (2014), Guardians of the Galaxy Vol. 2 (2017), and Guardians of the Galaxy Vol. 3 (2023) and in the animated series What If...? (2021–present). In 2019, he wrote, directed, and starred in the comedy-drama film Changeland. Green's first lead role on television was on the ABC sitcom Good & Evil in 1991, for which he won a Young Artist Award. Green later gained attention for his supporting roles as Oz, a teenage guitarist and the boyfriend of Willow Rosenberg, on the fantasy television series Buffy the Vampire Slayer (1997–2000), and as the voice of Chris Griffin on the Fox adult animated comedy series Family Guy (1999–present). He also voiced Leonardo in the Nickelodeon animated series Teenage Mutant Ninja Turtles (2014–2017) and the Joker in the Mass Effect video game series (2007–2012). Green created, directed, wrote, and produced the adult animated comedy series Robot Chicken and its spinoffs (2005–present), which have earned him three Primetime Emmy Awards and five Annie Awards. Description above from the Wikipedia article Seth Green, licensed under CC-BY-SA, full list of contributors on Wikipedia.

The Floaters
as Daniel

The Highest Stakes
as Samuel Nicholas

Grave Conversations
as Self

Little Death
as David

Hanky Panky
as Harry the Evil Hat

Albert Pyun: King of Cult Movies
as Self

Faster, Purple Worm! Kill! Kill!
as Presto Changeling

Guardians of the Galaxy Vol. 3
as Howard the Duck (voice)

A Disturbance in the Force: How the Star Wars Holiday Special Happened
as Self

That '90s Show
as Mitch

Celebrity Jeopardy!
as Self - Contestant

Weird: The Al Yankovic Story
as Radio DJ (voice)

1UP
as Super Pierre

Dirty Daddy: The Bob Saget Tribute
as Self

Black Friday
as Dour Dennis (voice)

Scooby-Doo, Where Are You Now!
as Self - Actor, "Scooby-Doo 2: Monsters Unleashed"

Pennywise: The Story of ‘It’
as Himself

What If...?
as Howard the Duck (voice)

Monty Python's Best Bits Celebrated
as Self

Star Wars: The Bad Batch
as Todo 360 (voice)

aTypical Wednesday
as Patrick

Crossing Swords
as Blinkerquartz (voice)

DC's Stargirl
as The Thunderbolt (voice)

Celebrating Marvel's Stan Lee
as Self

Animation Outlaws
as Self

Changeland
as Brandon

Godzilla: King of the Monsters
as Fighter Pilot (uncredited)

Shazam!
as Friend (uncredited)

Love, Death & Robots
as Private Folen (voice)

American Typecast
as Pete

The Rookie
as Jordan Neil

Wolfman's Got Nards
as Self

Comedy Central Roast of Bruce Willis
as Self - Audience Member (uncredited)

Bobcat Goldthwait's Misfits & Monsters
as Noble Bartell

Dear Dictator
as Dr. Charles Seaver

The Joel McHale Show with Joel McHale
as Self - Special Guest

A Futile and Stupid Gesture
as Christopher Guest

The Robot Chicken Walking Dead Special: Look Who's Walking
as The Nerd / Lennie Small / Snoopy / Museum Guide / Walker (voice)

Guardians of the Galaxy Vol. 2
as Howard the Duck (voice)

Tales of the Teenage Mutant Ninja Turtles: Super Shredder
as Leonardo (voice)

The Lego Batman Movie
as King Kong (voice)

Mary + Jane
as Toby

Holidays
as Pete (segment "Christmas")

Ice Age: The Great Egg-Scapade
as Squint (voice)

:DRYVRS
as Shawn

The Robot Chicken Christmas Special: The X-Mas United
as The Nerd / Santa Claus / Rudolph / Hermey the Elf (voice)

TV's Funniest Animated Stars: A Paley Center for Media Special
as Self

Krampus
as Lumpy (voice)

Half-Shell Heroes: Blast to the Past
as Leonardo (voice)

Robot Chicken DC Comics Special III: Magical Friendship
as The Nerd / Batman / Robin / Aquaman / Additional Voices (voice)

Crazy Ex-Girlfriend
as Patrick

SuperMansion

Con Man
as Casey Wingwall

Marvel's Guardians of the Galaxy
as Howard the Duck (voice)

Celebrity Family Feud
as Self

Teenage Mutant Ninja Turtles: Pulverizer Power
as Leonardo (voice)

Dinner at Tiffani's
as Self
Teenage Mutant Ninja Turtles: Renegade Rampage
as Leonardo (voice)

Robot Chicken: Christmas Specials
as Various (voice) (archive sound)

Marvel: 75 Years, from Pulp to Pop!
as Self