Hey Arnold!Season 52001 · 42 episodesEpisodes1Monkeyman!When Arnold gives the superhero Monkeyman a taste of normal life, he's far too busy to bother helping the weak and downtrodden.2Buses, Bikes, and SubwaysHelga and Harold must return to town on their own after the bus leaves them behind after a school trip to a chocolate factory, and Helga has tickets for a wrestling match and she can't be late.3Helga's MasqueradeHelga decides to act like Lila so Arnold will like her..4Mr. Green RunsMr. Green runs for city council.5Sid the Vampire SlayerSid thinks Stinky is a vampire.6Big SisOlga gets into a "Big Sis" program, but her "Lil' Sis" is Lila.7Bag of MoneyArnold, Sid and Gerald find a bag filled with money, but when Arnold loses it, everyone thinks he stole it.8Principal SimmonsWhen Mr. Simmons is upset that Principal Wartz is being too strict with the students, Wartz decides to resign and he selects Mr. Simmons to take his place. The newly promoted Principal Simmons decides to make massive reforms to permit the school environment to be more liberal, though will the students at P.S. 118 appreciate his authority?9New Bully on the BlockThe kids must face two bullies when a new kid, Ludwig, returns and wants the vacant lot for himself.10Phoebe Breaks a LegWhen Phoebe breaks a leg after being hit by a truck, Helga believes it's her fault (and it is), so she starts being nice to Phoebe. Yet when Phoebe's leg heals, she decides to stay disabled for a little longer.11Helga's LocketHelga inscribes her name in her Arnold locket.12Sid and GermsSid becomes obsessed with cleanliness.13SuspendedHarold is suspended and will do anything to get back into school.14Ernie in LoveErnie starts dating a tall model, but she doesn't want to continue dating him because of his height.15Parents DayArnold asks Grandpa what really happened with his parents, and he finds out that they disappeared after they left the country on a plane, although they might still be alive.16Summer LoveWhen Arnold, the boarders and the Patakis go to the beach, a girl uses Arnold to win a sandcastle competition. Ernie gets buried in the sand. Miriam and Suzie start taking dancing lessons. Grandpa thinks he's stuck on an island. Oscar starts using a metal detector to find ""treasure."" Big Bob gets a bad sunburn. Helga tries to warn Arnold that he's just being used.17Stuck in a TreeArnold gets stuck in a tree with Harold and Eugene.18Rhonda Goes BrokeRhonda's family goes broke and they move into the boarding house.19BeanedHelga gets amnesia, and Arnold starts acting nice to her.20Old Iron ManGrandpa Phil and his old friend have been feuding for quite some time, as their friendship fell apart years ago. However, they still attempt to compete with one another as they each believe they are the better individual; though when both men decide to enter the extremely dangerous Old Iron Man triathlon, Arnold attempts to put an end to their feud, as he does not believe they should risk their lives over something so trivial.21Arnold Visits ArnieArnold visits his cousin Arnie, whose friends look remarkably familiar to Anrold's22Chocolate BoyChocolate Boy wants to give up chocolate.23Harold vs. PattyP.S. 118 is having an Arm Wrestling contest, but Harold get humiliated when he loses to Patty before the contest, so he asks Patty for some pointers on winning.24Rich GuyAfter Arnold saves the life of a rich man, the man invites Arnold and Grandpa Phil to his house. He tells Arnold that he wishes Arnold was the son he never had, but he really does have a son, but they share nothing in common.25April Fool's DayArnold is sick and tired of everybody preforming their April Fool jokes on him (escpecially Helga), so he tries one of his own, but it backfires when it temporarily blinds Helga.26Gerald's GameGerald is involved with his new favorite game which Arnold dislikes.27Fishing TripArnold, Gerald, Harold, Sid and Eugene go on a fishing trip with their fathers and Phil.28MarriedRhonda uses a folding paper fortune teller to see who will marry who, and Arnold and Helga get paired up, causing them to both dream what life would be like married to each other.29On the LamStinky, Harold, and Sid are on the run after they think they blew up a police station.30Family ManMr. Hyunh has Arnold pretending to be his son for his new employer.31The Racing MuleMr. Hyunh, Oskar, and Ernie purchase a race horse, or so they think.32Curly's GirlCurly gets Rhonda to act like his girlfriend after something happens to Rhonda's mother's fur coat and he fixes it.33The Journal (1)Arnold finds a journal describing the adventures of his parents in the Jungle. Also, it contains a map telling where they had to go after they left him.34The Journal (2)Arnold finds a journal describing the adventures of his parents in the Jungle. Also, it contains a map telling where they had to go after they left him.35Timberly Loves ArnoldArnold does something for Timberly, causing Timberly to have a crush on Arnold. She makes Lila start to like Arnold because he has been helping Timberly.36Eugene, Eugene!Eugene gets the lead role in the school musical "Eugene, Eugene". But the play director cuts the parts that Eugene is a hero, and makes the parts look like he is a loser.37Ghost BrideGerald's Ghost Bride story inspires the other boys to venture into the cemetery at night, but they may have bit off more than they could chew, because they're hunted down by two different Ghost Brides.38Gerald vs. Jamie OGerald gets jealous because he thinks Jamie O. is trying to steal the girl he likes, when, actually, the girl likes Jamie O.39A Day in the Life of a ClassroomAfter Mr. Simmons wins an award, a TV station does a documentary on how he teaches.40Big Bob's CrisisAfter Big Bob has a heart attack, he tries to become nicer.41Phoebe's Little ProblemPhoebe gets embarrassed after she "passes gas" in front of a microphone.42Grandpa's PackardGrandpa's Packard is stolen from an antique car show.Season 1Season 2Season 3Season 4