Guest Star: Kevin Sussman

Kevin Sussman

Kevin Sussman is an American actor best known for his recurring roles as Stuart on The Big Bang Theory and as Walter on Ugly Betty.

Kevin Sussman has been a recurring cast member during the sixth and eighth seasons of The Big Bang Theory. View his cast biography

You are viewing a list of Kevin Sussman's 39 appearances on The Big Bang Theory.

  • The Hofstadter Isotope

    Season 2, Episode 20 - The Hofstadter Isotope
    Aired April 13, 2009

    When Penny accompanies the guys to the comic book store, she is charmed by store owner Stuart and agrees to go on a date with him. Leonard wonders why Penny has fallen for a guy who is just as geeky as he is. In an effort to improve his love life, Leonard ventures out to Ladies' Night with Howard and Raj.

    Appeared as Stuart

  • The Big Bang Theory

    Season 2, Episode 22 - The Classified Materials Turbulence
    Aired May 4, 2009

    After Howard designs a special toilet for the International Space Station, the guys rush to develop a fix to stop the toilet malfunctioning in space. Meanwhile, Penny goes out on a second date with Stuart from the comic book store. When Leonard gets the impression things went awry on Penny and Stuart's date, he is thrilled to learn the reason why.

    Appeared as Stuart

  • The Creepy Candy Coating Corollary

    Season 3, Episode 5 - The Creepy Candy Coating Corollary
    Aired October 19, 2009

    When Raj and Sheldon enter a Mystic Warlords of Ka'a tournament at Stuart's comic book store, Sheldon gets the opportunity to settle an old score with his nemesis, Star Trek: The Next Generation's Wil Wheaton. Meanwhile, Leonard regrets a pact he once made with Wolowitz when he must ask Penny to set him up with one of her friends.

    Appeared as Stuart

  • The Guitarist Amplification

    Season 3, Episode 7 - The Guitarist Amplification
    Aired November 9, 2009

    When Penny invites Justin, an old boyfriend, to stay at her apartment for a weeks, it sparks an argument between her and Leonard. Their fighting makes Sheldon uncomfortable as it reminds him of his parents' arguments.

    Appeared as Stuart

  • The Excelsior Acquisition

    Season 3, Episode 16 - The Excelsior Acquisition
    Aired March 1, 2010

    Sheldon and the guys are excited to learn comic book legend Stan Lee will be signing autographs at the comic book store. However, Sheldon's happiness fades when he finds out he received a traffic ticket the night he drove Penny to the hospital. To make matters worse, his day in traffic court is the same day as the comic-book signing.

    Appeared as Stuart

  • The Wheaton Recurrence

    Season 3, Episode 19 - The Wheaton Recurrence
    Aired April 12, 2010

    When Leonard says "I Love You" to Penny and she doesn't respond in kind, the couple struggle to find a way to keep their relationship alive. Meanwhile, Sheldon has a second encounter with his mortal enemy Wil Wheaton, this time at a bowling alley.

    Appeared as Stuart

  • The Desperation Emanation

    Season 4, Episode 5 - The Desperation Emanation
    Aired October 21, 2010

    When Leonard realizes he's the only one without a girlfriend, in a group that includes Sheldon, he asks Howard to set him up with one of Bernadette's friends. Meanwhile, Sheldon is trying to lose his "girlfriend", Amy Farrah Fowler, after he misunderstands her request for him to meet her mother.

    Appeared as Stuart

  • The Justice League Recombination

    Season 4, Episode 11 - The Justice League Recombination
    Aired December 16, 2010

    With New Year's Eve approaching, the guys invite Zack and Penny to join their Justice League group at the comic book store's annual costume party. Their hopes of finally winning the contest this year are dashed when Penny pulls out.

    Appeared as Stuart

  • The Toast Derivation

    Season 4, Episode 17 - The Toast Derivation
    Aired February 24, 2011

    With Leonard and Priya now dating, the gang are spending more time at Priya's apartment. Sheldon is uncomfortable with this change but is powerless to stop it. After realizing Leonard is the center of their social group, not him, Sheldon sets out to find a new group of friends who will have fun his way. Meanwhile, Penny tries to move on after seeing Leonard in his new relationship.

    Appeared as Stuart

  • The Russian Rocket Reaction

    Season 5, Episode 5 - The Russian Rocket Reaction
    Aired October 13, 2011

    When Sheldon's nemesis Wil Wheaton invites him and Leonard to a party at his house, Sheldon is unhappy that his friend is going to the party. Meanwhile, Howard and Bernadette argue when Howard is offered an incredible opportunity to go to scape.

    Appeared as Stuart

  • The Good Guy Fluctuation

    Season 5, Episode 7 - The Good Guy Fluctuation
    Aired October 27, 2011

    Leonard and Priya's long-distance relationship is put to the test when Leonard meets a cute comic book artist and finds himself drawn to her. Meanwhile, Sheldon tries to get revenge on the guys after they pull a Halloween prank on him.

    Appeared as Stuart

  • The Flaming Spittoon Acquisition

    Season 5, Episode 10 - The Flaming Spittoon Acquisition
    Aired November 17, 2011

    Stuart from the comic book store asks Amy out on a date. Sheldon must confront his feeling so of jealousy and decide where his relationship with Amy is going.

    Appeared as Stuart

  • The Friendship Contraction

    Season 5, Episode 15 - The Friendship Contraction
    Aired February 2, 2012

    When Leonard grows tired of Sheldon's selfish demands, he terminates the roommate agreement and downgrades their friendship. Meanwhile, Wolowitz tries to pick his own astronaut nickname.

    Appeared as Stuart

  • The Weekend Vortex

    Season 5, Episode 19 - The Weekend Vortex
    Aired March 8, 2012

    When the guys decide to spend the weekend playing video games, Sheldon backs out of his plans with Amy to attend her aunt's birthday party.

    Appeared as Stuart

  • The Stag Convergence

    Season 5, Episode 22 - The Stag Convergence
    Aired April 26, 2012

    Raj gets drunk at Howard's bachelor party and reveals a little too much about Howard's past sexual encounters. When Bernadette hears this in a video posted online, she reconsiders her engagement to Howard.

    Appeared as Stuart

  • The Deception Verification

    Season 7, Episode 2 - The Deception Verification
    Aired September 26, 2013

    When Leonard returns from his expedition early, he chooses to sneak into Penny's apartment and spend a few days with her alone. Sheldon reacts with anger when he finds out Leonard is back in town and didn't tell him. Meanwhile, Howard's close relationship with his mother causes his masculinity to be called into question.

    Appeared as Stuart

  • The Scavenger Vortex

    Season 7, Episode 3 - The Scavenger Vortex
    Aired October 3, 2013

    When Raj devises a scavenger hunt for the gang, they pair off in uncommon groupings, but the fierce competition causes friction among the friends.

    Appeared as Stuart

  • The Raiders Minimization

    Season 7, Episode 4 - The Raiders Minimization
    Aired October 10, 2013

    When Amy points out a plot flaw in Raiders of the Lost Ark, one of Sheldon's favorite movies, he sets out to get his revenge by ruining something Amy likes. When Penny feels sorry for Leonard after his mother publishes an embarrassing book about his childhood, Leonard finds he can manipulate Penny's sympathy and use it to his advantage. Meanwhile, Raj and Stuart join an online dating website.

    Appeared as Stuart

  • The Cooper Extraction

    Season 7, Episode 11 - The Cooper Extraction
    Aired December 12, 2013

    When Sheldon flies back to Texas for his sister's childbirth, the gang gather to decorate the apartment's Christmas tree. When they begin to wonder what life would be like without Sheldon, they come to realize how big a part of their lifes he has become.

    Appeared as Stuart

  • The Hesitation Ramification

    Season 7, Episode 12 - The Hesitation Ramification
    Aired January 2, 2014

    After Penny's big acting break on NCIS gets cut, Leonard's attempts to help her lead Penny to make a bold relationship move. Meanwhile, Raj tries to improve his "game" before re-entering the dating world, and Sheldon learns how to be funny.

    Appeared as Stuart

  • The Occupation Recalibration

    Season 7, Episode 13 - The Occupation Recalibration
    Aired January 9, 2014

    When Sheldon is forced by the university to use his vacation time, he struggles to fill time. Meanwhile, Leonard tries to support Penny after she decides to quit her waitressing job to focus on her acting career, and Bernadette needs Stuart's help tracking down a comic book after she accidentally destroys Howard's copy.

    Appeared as Stuart

  • The Mommy Observation

    Season 7, Episode 18 - The Mommy Observation
    Aired March 13, 2014

    When Sheldon stops by his mom's house in Texas, he must learn to deal with her new romantic status. Meanwhile, Raj throws a "Murder Mystery" party for the gang, leading to tension among the friends.

    Appeared as Stuart

  • The Status Quo Combustion

    Season 7, Episode 24 - The Status Quo Combustion
    Aired May 15, 2014

    With his career in flux Sheldon struggles to deal with even more changes in his life, leading him to make a drastic decision. Meanwhile, Raj and Emily's relationship takes a step forward, while an injured Mrs. Wolowitz puts a strain of Howard and Bernadette's life.

    Appeared as Stuart

  • The Leftover Thermalization

    Season 8, Episode 18 - The Leftover Thermalization
    Aired March 12, 2015

    Tensions rise between Sheldon and Leonard when a magazine article about the paper they co-wrote together overlooks Leonard's contribution. Elsewhere, when the power goes down at Mrs. Wolowitz's house, Howard salvages the defrosting food by inviting the gang to a final family dinner in her honor.

    Appeared as Stuart

  • The Maternal Combustion

    Season 8, Episode 23 - The Maternal Combustion
    Aired April 30, 2015

    When Sheldon and Leonard receive an award for the paper they co-wrote together, their mothers both pay a visit to Pasadena. Meeting for the first time, sparks fly between Mary Cooper and Dr. Beverly Hofstadter when they don't see eye to eye on religion or psychiatry.

    Meanwhile, Bernadette has had enough of feeling like a mother to three teenage boys, so Howard, Stuart and Raj are told to clean the kitchen.

    Appeared as Stuart

  • The Commitment Determination

    Season 8, Episode 24 - The Commitment Determination
    Aired May 7, 2015

    After Sheldon upsets Amy on their fifth anniversary date night, Sheldon and Amy both think about the state of their relationship. Meanwhile, Sheldon's relationship reflection pushes Leonard and Penny to reexamine their engagement. Raj rethinks his relationship with Emily, while Howard and Bernadette try to make a change to their homelife.

    Appeared as Stuart

  • The Matrimonial Momentum

    Season 9, Episode 1 - The Matrimonial Momentum
    Aired September 21, 2015

    When Penny and Leonard arrive in Vegas to get married, Penny is still thinking about Leonard's admission that he kissed another girl. Meanwhile, Sheldon doesn't know what to think after Amy calls time on their relationship. 

    Appeared as Stuart

  • The 2003 Approximation

    Season 9, Episode 4 - The 2003 Approximation
    Aired October 12, 2015

    When Sheldon learns that Leonard has moved out and is now living with Penny, he reverts to 2003 - a simpler time before he met Leonard and Penny. Howard and Raj form a folk sci-fi band to play live music at Stuart's Comic Book Store.

    Appeared as Stuart

  • The Perspiration Implementation

    Season 9, Episode 5 - The Perspiration Implementation
    Aired October 19, 2015

    When the guys sign up for fencing class taught by Barry Kripke, Sheldon finds himself in an uncomfortable position after Kripke expresses an interest in Amy. Meanwhile, the girls try to help Stuart attract more female shoppers to his comic book store.

    Appeared as Stuart

  • The Helium Insufficiency

    Season 9, Episode 6 - The Helium Insufficiency
    Aired October 26, 2015

    In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.

    Appeared as Stuart

  • The Sales Call Sublimation

    Season 9, Episode 12 - The Sales Call Sublimation
    Aired January 7, 2016

    Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist
    on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can't believe what they are feeling after Stuart moves out.

    Appeared as Stuart

  • The Empathy Optimization

    Season 9, Episode 13 - The Empathy Optimization
    Aired January 14, 2016

    After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend.

    Appeared as Stuart

  • The Celebration Experimentation

    Season 9, Episode 17 - The Celebration Experimentation
    Aired February 25, 2016

    After more than nine years together, the gang finally celebrates Sheldon's birthday, surprising him with a special guest, on the 200th episode of The Big Bang Theory.

    Appeared as Stuart

  • The Viewing Party Combustion

    Season 9, Episode 21 - The Viewing Party Combustion
    Aired April 21, 2016

    Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.

    Appeared as Stuart

  • The Line Substitution Solution

    Season 9, Episode 23 - The Line Substitution Solution
    Aired May 5, 2016

    Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also, Leonard's mother, Beverly, comes to town and Penny struggles to make a connection with her.

    Appeared as Stuart

  • The Conjugal Conjecture

    Season 10, Episode 1 - The Conjugal Conjecture
    Aired September 19, 2016

    After Sheldon's mother and Leonard's father share an evening together, everyone deals with an awkward morning the next day. Also, Penny's family arrives for the wedding ceremony, including her anxiety-ridden mother, Susan, and her drug dealing brother, Randall.

    Appeared as Stuart

  • The Hot Tub Contamination

    Season 10, Episode 5 - The Hot Tub Contamination
    Aired October 17, 2016

    Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation.

    Appeared as Stuart

  • The Fetal Kick Catalyst

    Season 10, Episode 6 - The Fetal Kick Catalyst
    Aired October 27, 2016

    Penny is surprised to learn she has fans of her performance in "Serial Ape-ist" when she attends Van Nuys Comic Con with Leonard. Also, Amy hosts a Sheldon-style brunch at Penny's apartment and Wolowitz makes an impulsive purchase when he starts stressing out about the baby on the way.

    Appeared as Stuart

  • The Property Division Collision

    Season 10, Episode 10 - The Property Division Collision
    Aired December 1, 2016

    Sheldon and Leonard try to divvy up their shared belongings, but can't agree on anything. Also, Koothrappali and Stuart fight to be the most helpful during Bernadette's final weeks of pregnancy.

    Appeared as Stuart

Kevin Sussman has been a recurring cast member of The Big Bang Theory during the sixth and eighth seasons. The episodes for which he is credited as a cast member are not included on this list.

View Kevin Sussman's cast biography

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