Season 1
S1.E0 ∙ Official Unaired PilotS1.E1 ∙ Downtown as Fruits/Eugene's BikeS1.E2 ∙ The Little Pink Book/Field TripS1.E3 ∙ Arnold's Hat/Stoop KidS1.E4 ∙ Helga's Makeover/The Old BuildingS1.E5 ∙ 6th Grade Girls/The BaseballS1.E6 ∙ Heat/SnowS1.E7 ∙ Operation Ruthless/The Vacant LotS1.E8 ∙ The List/Haunted TrainS1.E9 ∙ Mugged/Roughin' ItS1.E10 ∙ Door #16/Arnold as CupidS1.E11 ∙ Arnold's ChristmasS1.E12 ∙ Benchwarmer/Cool JerkS1.E13 ∙ Das Subway/Wheezin' EdS1.E14 ∙ Tutoring Torvald/Gerald Comes OverS1.E15 ∙ Spelling Bee/Pigeon ManS1.E16 ∙ Olga Comes Home/Sally's CometS1.E17 ∙ Abner Come Home/The Sewer KingS1.E18 ∙ False Alarm/World RecordsS1.E19 ∙ Magic Show/24 Hours to LiveS1.E20 ∙ Arnold's Valentine
Season 2
S2.E1 ∙ Save the Tree/New TeacherS2.E2 ∙ Helga's Love Potion/Gerald's SecretS2.E3 ∙ The Big Scoop/Harold's KittyS2.E4 ∙ Longest Monday/Eugene's PetS2.E5 ∙ Monkey Business/Big CaesarS2.E6 ∙ Ransom/Ms. PerfectS2.E7 ∙ Arnold's HalloweenS2.E8 ∙ Arnold Saves Sid/HookeyS2.E9 ∙ Freeze Frame/Phoebe CheatsS2.E10 ∙ Mudbowl/Gerald Moves OutS2.E11 ∙ The High Life/Best FriendsS2.E12 ∙ Steely Phil/Quantity TimeS2.E13 ∙ Eating Contest/Rhonda's GlassesS2.E14 ∙ Helga's Boyfriend/Crush on TeacherS2.E15 ∙ Hall Monitor/Harold's Bar MitzvahS2.E16 ∙ Coach Wittenberg/Four-Eyed JackS2.E17 ∙ Eugene Goes Bad/What's Opera, Arnold?S2.E18 ∙ Tour de Pond/Teachers' StrikeS2.E19 ∙ Part Time Friends/BiosquareS2.E20 ∙ Runaway Float/Partners
Season 3
S3.E1 ∙ Helga Blabs It All/Harold the ButcherS3.E2 ∙ Dangerous Lumber/Mr. Hyunh Goes CountryS3.E3 ∙ Casa Paradiso/Gerald's TonsilsS3.E4 ∙ Arnold's Room/Helga vs. Big PattyS3.E5 ∙ Stinky Goes Hollywood/Olga Gets EngagedS3.E6 ∙ Curly Snaps/Pre-Teen ScreamS3.E7 ∙ Grandpa's Birthday/Road TripS3.E8 ∙ Sid's Revenge/Roller CoasterS3.E9 ∙ The Aptitude Test/Oskar Gets a JobS3.E10 ∙ Arnold Betrays Iggy/Helga and the NannyS3.E11 ∙ Career Day/Hey Harold!S3.E12 ∙ Best Man/Cool PartyS3.E13 ∙ Arnold & Lila/Grand PrixS3.E14 ∙ Arnold's ThanksgivingS3.E15 ∙ Helga's Show/The FloodS3.E16 ∙ Phoebe Takes the Fall/The Pig WarS3.E17 ∙ Crabby Author/Rich KidS3.E18 ∙ Girl Trouble/School DanceS3.E19 ∙ School Play
Season 4
S4.E1 ∙ Full Moon/Student TeacherS4.E2 ∙ Big Gino/Jamie O in LoveS4.E3 ∙ Eugene's Birthday/Stinky's PumpkinS4.E4 ∙ The Beeper Queen/Oskar Can't Read?S4.E5 ∙ Dinner for Four/Phoebe SkipsS4.E6 ∙ Helga's Parrot/Chocolate TurtlesS4.E7 ∙ Love and Cheese/Weighing HaroldS4.E8 ∙ Back to School/Egg StoryS4.E9 ∙ It Girl/Deconstructing ArnoldS4.E10 ∙ Grudge Match/Polishing RhondaS4.E11 ∙ Weird Cousin/Baby OskarS4.E12 ∙ Grandpa's Sister/Synchronized SwimmingS4.E13 ∙ Helga Sleepwalks/Fighting FamiliesS4.E14 ∙ Headless Cabbie/Friday the 13thS4.E15 ∙ Veterans DayS4.E16 ∙ Helga on the CouchS4.E17 ∙ Dino Checks Out
Season 5
S5.E0 ∙ Arnold's HatS5.E1 ∙ Monkeyman!/Buses, Bikes, and SubwaysS5.E2 ∙ Helga's Masquerade/Mr. Green RunsS5.E3 ∙ Sid the Vampire Slayer/Big SisS5.E4 ∙ Bag of Money/Principal SimmonsS5.E5 ∙ New Bully on the Block/Phoebe Breaks a LegS5.E6 ∙ Parents DayS5.E7 ∙ Helga's Locket/Sid and GermsS5.E8 ∙ Suspended/Ernie in LoveS5.E9 ∙ Summer LoveS5.E10 ∙ Stuck in a Tree/Rhonda Goes BrokeS5.E11 ∙ Beaned/Old Iron ManS5.E12 ∙ Arnold Visits Arnie/Chocolate BoyS5.E13 ∙ Harold vs. Patty/Rich GuyS5.E14 ∙ April Fool's DayS5.E15 ∙ Gerald's Game/Fishing TripS5.E16 ∙ MarriedS5.E17 ∙ On the Lam/Family ManS5.E18 ∙ The Racing Mule/Curly's GirlS5.E19 ∙ The JournalS5.E20 ∙ Timberly Loves Arnold/Eugene, Eugene!S5.E21 ∙ Ghost Bride/Gerald vs. Jamie O.S5.E22 ∙ Simmons' Documentary/Big Bob's CrisisS5.E23 ∙ Phoebe's Little Problem/Grandpa's PackardS5.E32 ∙ Helga's Love Potion