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Leonard with his nerd glasses
Leonard Hofstadter
Background information
Feature films
Short films
Television programs The Big Bang Theory
Video games
Park attractions
Portrayed by Johnny Galecki
Portrayed by
Animators
Voice
Performance model
Designer
Inspiration
Honors and awards
Character information
Full name Dr. Leonard Leakey Hofstadter
Other names Doctor Hofstader,
Lenny,
Nancy,
Doctor Stud,
Speed-of-Light Leonard,
Short Round,
Captain Good Guy,
Little Leonard,
The King of Nerds
Personality Self-caring, hard-working, geeky, intelligent, mature,
Appearance Slender, Fair skin, brown hair, black thick-framed glasses, Jacket, Shirt or hoodie in various colors.
Occupation Experimental Physicist
Nerd
Alignment Good
Affiliations
Nationality American
Birthday May 1980
Goal To win a Nobel Prize,
To win over Penny then marry her (succeeded)
Home New Jersey (his birthplace)
Apartment 4A (current residence)
Relatives Alfred Hofstadter (father)
Beverley Hofstadter (mother)
Michael Hofstadter (brother)
His sister
Edna (aunt)
Floyd (uncle)
Penny Hofstadter (wife)
Wyatt (father-in-law)
Susan (mother-in-law)
Randall (brother-in-law)
Pets
Allies Sheldon Cooper, Howard Wolowitz, Rajesh Koothrappali, (his girlfriend, now wife) Penny Hofstadter, Amy Farrah Fowler, Bernadette Rostenkowski-Wolowitz, Stuart Bloom,
Minions
Enemies Kurt, Sheldon Cooper (at times), Todd Zarnecki,
Likes Physics, knowledge, Experiments, Impressing Penny, Comic books,
Dislikes Sheldon's arrogant and obsessive behavior, dairy products, Sheldon or Howard's inappropriate comments, Penny mad at him, Kurt's behavior towards him,
Powers and abilities
Possessions
Weapons
Fate
Quote One across is Aegean, eight down is Nabakov, twenty-six across is MCM, fourteen down is… move your finger… phylum, which makes fourteen across Port-au-Prince. See, Papa Doc’s capital idea, that’s Port-au-Prince. Haiti.

Leonard Leakey Hofstadter, Ph.D., is an experimental physicist at the California Institute of Technology who rooms with Sheldon Cooper in Apartment 4A. Originally from New Jersey, Leonard attended Princeton University and was twenty-four years old when he received his doctorate with a Dissertation of the Year award for experimental particle physics. Having lived with Sheldon for ten years as of Season 6, he and Leonard are best friends; however, Leonard can become very agitated by many of his eccentricities and often feels obligated to explain Sheldon's behavior and serve as a mediator between him and other people in situations – he has been described as the straight man of the series. While Leonard, along with his geek friends and fellow scientists, is somewhat socially inept, Leonard would like to be better accepted outside of his social group. Leonard is better well-adjusted than his companions, being more willing to try different things. He appears to be best suited as a leader of the group, with Sheldon commenting how Leonard is the "Kirk" of the group. The writers have toyed with a romance between him and neighbor Penny, with their on-and-off relationship being a major force for drama.

Early LifeEdit

Leonard was born on May 1980 in New Jersey. (Same month that Mt. St. Helen's erupted and "The Empire Strikes Back" came out.) Not much is known about his early life. He has two siblings: a younger brother named Mike and an elder sister that we don't know the name of ("The Maternal Capacitance", S2E15). At age eight his mother embarrassed him in front of the school by making him give back his science fair ribbon at the ceremony. He said it was his first science fair and that he had to give the ribbon back because he had done "Do Lima Beans React Better to Classical Music?". His brother had previously done "Do Lima Beans Grow Worse to Rock N' Roll" ("The Pants Alternative", S3E18) . His father was an anthropologist who spent more time with a 2-year-old Etruscan boy than with Leonard, who then said "I hate that boy" when he recalled this fact in The Fish Guts Displacement, S6E10). He did not celebrate his birthday or Christmas as a child (The Peanut Reaction, S1E16) due to his parent's wish to study the holidays for their "anthropological and sociological implications on society." (The Maternal Congruence, S3E11). The family wrote research papers for Christmas and they were returned graded with his stocking. ("The Santa Simulation", S6E11) As Leonard was a nerd, he was bullied badly as a youth and he stopped growing in the eighth grade. One Easter his mother sent him out on an Easter egg hunt without putting out any eggs to see how long he would search for them. Before he went to Princeton, his parents put him in advanced placement classes, and sent him to learn cello, "getting me beaten up enough", as he described himself ("The Peanut Reaction", S1E16). Johnny does play the cello.

Physical AppearanceEdit

Leonard is 5' 5" (1.65 m) with brunette hair and brown eyes. Penny thinks that his eyebrows are weird. His wardrobe includes black thick-framed glasses, a large variety of colored and patterned sweat shirts with hoods worn under a neutral colored jacket , brown trousers, and low-cut black Converse All Stars sneakers. Like Sheldon, Leonard often wears physics-themed t-shirts (under his other layers), but he has a much wider selection; many of his t-shirt themes deal with social issues such as renewable energy (wind farms) and recycling, as well as animal issues (rescue programs and themes around endangered species).

AppearancesEdit

RelationshipsEdit

QuotesEdit

  • (after he sarcastically tells Sheldon that they'll break into Penny's apartment again the next night to shampoo the carpet; Sheldon misunderstood it seriously) "For God's sake, Sheldon, do I have to... hold up a sarcasm sign every time I open my mouth?"
  • "Okay, so we now have a socially-awkward genius in a room full of attractive, age-appropriate women."
  • (whilst trying to get Kurt to pay Penny the debt he owe her) "I don't need backup. I have right on my side. And I'm wearing cargo shorts under my pants."

GalleryEdit

TriviaEdit

  • Despite being the main character, Sheldon has more popularity than him. However, in his world, people like him more than they like Sheldon.
  • Character has appeared in every episode including both pilots.
  • Leonard wants to achieve a Nobel Prize someday.
  • Leonard gets carsick unless he sits in the front.
  • Leonard has trouble making eye contact, only being able to do so with Penny and the rest of his friends, which could be indicative of Asperger's Syndrome, ADD, or simply social anxiety.
  • Leonard is the group's (not including Penny) Wii bowling 'Team Captain'.
  • Leonard's last name (Hofstadter) is in honor of Nobel Prize Winning Physicist Robert Hofstadter, who worked at Stanford University in the field of Nuclear Physics.
  • Leonard dislikes his name since it has "Nerd" in it, saying he prefers the name Angelo as it has "angel" and "Jello" in it, since he was high at the time.
  • To prevent his pants getting stolen, Leonard wears cargo shorts underneath his pants whilst visiting Kurt's apartment for Penny's errands.
  • Leonard is the only character in the show who has had five girlfriends (Joyce Kim, Leslie Winkle, Penny, Stephanie Barnett and Priya Koothrappali) until four of them broke up with him, leaving him with Penny. This situation is followed by Howard with four girlfriends (Christy Vanderbel, Leslie Winkle, Lisa and Bernadette Rostenkowski).
  • Leonard along with his roommate Sheldon is named after the producer and director Sheldon Leonard.



v - e - d
2000px-TBBT logo svg
Characters
Main Characters

Leonard HofstadterSheldon CooperPenny HofstadterHoward WolowitzRajesh KoothrappaliAmy Farrah FowlerBernadette Rostenkowski-WolowitzStuart BloomEmily SweeneyLeslie Winkle

Recurring Characters

Barry KripkeWil WheatonAltheaKurtEric GablehauserMary CooperDebbie WolowitzV.M. KoothrappaliMrs. KoothrappaliMikeStephanie BarnettBeverley HofstadterPresident SiebertZack JohnsonPriya KoothrappaliWyattMike RostenkowskiMrs. RostenkowskiAlex JensenJanine DavisLucyProfessor ProtonDavid GibbsClaireStephen HawkingColonel Richard Williams

Minor Characters

ChristyLalita GuptaToby LoobenfeldDennis KimDimitriMissy CooperBlainTomOctaviaMariaLourdesRamona NowitzkiKathy O'BrianDavid UnderhillAliciaMikaylaCaptain SweatpantsLonely LarryDr. CrawleyBethanySarahSkeeterProfessor LaughlinAbbyMarthaOfficer HackettSandyGlenVenkatesh KoothrappaliSebastianLouie/LouiseJoyce KimMrs. GundersonJoyMrs. FowlerAngela PageProfessor GlennMrs. LathamTodd ZarneckiColonel Richard Williams

Episodes
Season 1

PilotThe Big Bran HypothesisThe Fuzzy Boots CorollaryThe Luminous Fish EffectThe Hamburger PostulateThe Middle-Earth ParadigmThe Dumpling ParadoxThe Grasshopper ExperimentThe Cooper-Hofstadter PolarizationThe Loobenfeld DecayThe Pancake Batter AnomalyThe Jerusalem DualityThe Bat Jar ConjectureThe Nerdvana AnnihilationThe Porkchop IndeterminacyThe Peanut ReactionThe Tangerine Factor

Season 2

The Bad Fish ParadigmThe Codpiece TopologyThe Barbarian SublimationThe Griffin EquivalencyThe Euclid AlternativeThe Cooper-Nowitzki TheoremThe Panty Piñata PolarizationThe Lizard-Spock ExpansionThe White Asparagus TriangulationThe Vartabedian ConundrumThe Bath Item Gift HypothesisThe Killer Robot InstabilityThe Friendship AlgorithmThe Financial PermeabilityThe Maternal CapacitanceThe Cushion SaturationThe Terminator DecouplingThe Work Song NanoclusterThe Dead Hooker JuxtapositionThe Hofstadter IsotopeThe Vegas RenormalizationThe Classified Materials TurbulenceThe Monopolar Expedition

Season 3

The Electric Can Opener FluctuationThe Jiminy ConjectureThe Gothowitz DeviationThe Pirate SolutionThe Creepy Candy Coating CorollaryThe Cornhusker VortexThe Guitarist AmplificationThe Adhesive Duck DeficiencyThe Vengeance FormulationThe Gorilla ExperimentThe Maternal CongruenceThe Psychic VortexThe Bozeman ReactionThe Einstein ApproximationThe Large Hadron CollisionThe Excelsior AcquisitionThe Precious FragmentationThe Pants AlternativeThe Wheaton RecurrenceThe Spaghetti CatalystThe Plimpton StimulationThe Staircase ImplementationThe Lunar Excitation

Season 4

The Robotic ManipulationThe Cruciferous Vegetable AmplificationThe Zazzy SubstitutionThe Hot Troll DeviationThe Desperation EmanationThe Irish Pub FormulationThe Apology InsufficiencyThe 21-Second ExcitationThe Boyfriend ComplexityThe Alien Parasite HypothesisThe Justice League RecombinationThe Bus Pants UtilizationThe Love Car DisplacementThe Thespian CatalystThe Benefactor FactorThe Cohabitation FormulationThe Toast DerivationThe Prestidigitation ApproximationThe Zarnecki IncursionThe Herb Garden GerminationThe Agreement DissectionThe Wildebeest ImplementationThe Engagement ReactionThe Roommate Transmogrification

Season 5
The Skank Reflex AnalysisThe Infestation HypothesisThe Pulled Groin ExtrapolationThe Wiggly Finger CatalystThe Russian Rocket ReactionThe Rhinitis RevelationThe Good Guy FluctuationThe Isolation PermutationThe Ornithophobia DiffusionThe Flaming Spittoon AcquisitionThe Speckerman RecurrenceThe Shiny Trinket ManeuverThe Recombination HypothesisThe Beta Test InitiationThe Friendship ContractionThe Vacation SolutionThe Rothman DisintegrationThe Werewolf TransformationThe Weekend VortexThe Transporter MalfunctionThe Hawking ExcitationThe Stag ConvergenceThe Launch AccelerationThe Countdown Reflection
Season 6

The Date Night VariableThe Decoupling FluctuationThe Higgs Boson ObservationThe Re-Entry MinimizationThe Holographic ExcitationThe Extract ObliterationThe Habitation ConfigurationThe 43 PeculiarityThe Parking Lot EscalationThe Fish Guts DisplacementThe Santa SimulationThe Egg Salad EquivalencyThe Bakersfield ExpeditionThe Cooper/Kripke InversionThe Spoiler Alert SegmentationThe Tangible Affection ProofThe Monster IsolationThe Contractual Obligation ImplementationThe Closet ReconfigurationThe Tenure TurbulenceThe Closure AlternativeThe Proton ResurgenceThe Love Spell PotentialThe Bon Voyage Reaction

Season 7

The Hofstadter InsufficiencyThe Deception VerificationThe Scavenger VortexThe Raiders MinimizationThe Workplace ProximityThe Romance ResonanceThe Proton DisplacementThe Itchy Brain SimulationThe Thanksgiving DecouplingThe Discovery DissipationThe Cooper ExtractionThe Hesitation RamificationThe Occupation RecalibrationThe Convention ConundrumThe Locomotive ManipulationThe Table PolarizationThe Friendship TurbulenceThe Mommy ObservationThe Indecision AmalgamationThe Relationship DiremptionThe Anything Can Happen Thursday RecurrenceThe Proton TransmogrificationThe Gorilla DissolutionThe Status Quo Combustion

Season 8

The Locomotion InterruptionThe Junior Professor SolutionThe First Pitch InsufficiencyThe Hook-up ReverberationThe Focus AttenuationThe Expedition ApproximationThe Misinterpretation AgitationThe Prom EquivalencyThe Septum DeviationThe Champagne ReflectionThe Clean Room InfiltrationThe Space Probe DisintegrationThe Anxiety OptimizationThe Troll ManifestationThe Comic Book Store RegenerationThe Intimacy AccelerationThe Colonization ApplicationThe Leftover ThermalizationThe Skywalker IncursionThe Fortification ImplementationThe Communication DeteriorationThe Graduation TransmissionThe Maternal CombustionThe Commitment Determination

Season 9

The Matrimony MomentumThe Separation OscillationThe Bachelor Party CorrosionThe 2003 ApproximationThe Perspiration ImplementationThe Helium InsufficiencyThe Spock ResonanceThe Mystery Date ObservationThe Platonic PermutationThe Earworm ReverberationThe Opening Night ExcitationThe Sales Call SublimationThe Empathy OptimizationThe Meemaw MaterializationThe Valentino SubmergenceThe Positive Negative ReactionThe Celebration ExperimentationThe Application DeteriorationThe Solder Excursion DiversionThe Big Bear PrecipitationThe Viewing Party CombustionThe Fermentation BifurcationThe Line Substitution SolutionThe Convergence-Convergence

Season 10

The Conjugal ConjectureThe Military MiniaturizationThe Dependence TranscendenceThe Cohabitation ExperimentationThe Hot Tub ContaminationThe Fetal Kick CatalystThe Veracity ElasticityThe Brain Bowl IncubationThe Geology ElevationThe Property Division CollisionThe Birthday SynchronicityThe Holiday SummationThe Romance RecalibrationThe Emotion Detection AutomationThe Locomotion Reverberation

Locations

The Apartment BuildingApartment 4AApartment 4BThe ElevatorCalifornia Institute of TechnologyWolowitz HouseThe Comic Center of PasadenaPasadenaThe Cheesecake FactoryRaj's ApartmentAmy's ApartmentHoward and Bernadette's ApartmentThe StairsSheldon's Old OfficeRaj's Old OfficeSheldon's New OfficeHoward's LabThe University CafeteriaKripke's Plasma LabInternational Space StationThe Kinetics Lab

See Also

Unaired Pilot

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