Appearances
Appearances=261 episodes
Episodes
Bold means the character played a major role
Season 1
- Help Wanted
- Tea at the Treedome
- Bubblestand
- Jellyfishing
- Plankton! (sleeping)
- Naughty Nautical Neighbors
- Boating School
- Home Sweet Pineapple
- Mermaid Man and Barnacle Boy
- Hall Monitor
- Sandy's Rocket
- Nature Pants
- Opposite Day
- Culture Shock
- Squidward the Unfriendly Ghost
- Scaredy Pants
- I Was a Teenage Gary
- SB-129
- Sleepy Time
- Suds
- Valentine's Day
- The Paper (cameo at end)
- Arrgh!
- Rock Bottom
- Texas
- Fools in April
- Neptune's Spatula
- Hooky
Season 2
- Your Shoe's Untied
- Squid's Day Off (2 cameos)
- Something Smells
- Big Pink Loser
- Bubble Buddy (voice only)
- Wormy
- Patty Hype
- Grandma's Kisses
- Squidville
- Pre-Hibernation Week (speaking cameo)
- Life of Crime
- Christmas Who?
- Survival of the Idiots
- Dumped
- I'm Your Biggest Fanatic
- Mermaid Man and Barnacle Boy III
- Squirrel Jokes
- Pressure
- The Smoking Peanut
- Shanghaied
- Frankendoodle
- The Secret Box
- Band Geeks
- Graveyard Shift (cameo)
- Procrastination (2 cameos, 1 in deleted scene)
- I'm with Stupid
- Sailor Mouth
- The Fry Cook Games
- Sandy, SpongeBob, and the Worm
Season 3
- SpongeGuard on Duty
- Club SpongeBob
- My Pretty Seahorse (3 cameos)
- The Bully
- Just One Bite (non-speaking cameo)
- Idiot Box
- Mermaid Man and Barnacle Boy IV
- Doing Time
- Snowball Effect
- One Krab's Trash
- No Weenies Allowed
- Squilliam Returns (5 minors, but not all of them are speaking)
- Rock-a-Bye Bivalve
- Krusty Krab Training Video
- Wet Painters
- Party Pooper Pants (also seen on the logo)
- Chocolate with Nuts
- Mermaid Man and Barnacle Boy V
- New Student Starfish
- Ugh (only heard)
- The Great Snail Race
- Mid-Life Crustacean
- I Had an Accident
- Born Again Krabs (non-speaking cameo, only on the time card)
- The Camping Episode
- Missing Identity
- The Sponge Who Could Fly
- SpongeBob Meets the Strangler
- Pranks a Lot
Season 4
- The Lost Mattress
- Have You Seen This Snail?
- Good Neighbors
- Funny Pants
- Dunces and Dragons
- Mermaid Man and Barnacle Boy VI: The Motion Picture
- Patrick SmartPants
- SquidBob TentaclePants (talking non-speaking cameo)
- Krusty Towers
- Mrs. Puff, You're Fired
- Ghost Host (cameo without voice)
- Chimps Ahoy
- All That Glitters (cameo without speaking)
- Wishing You Well
- Once Bitten
- Bummer Vacation
- Wigstruck
- Squidtastic Voyage
- That's No Lady
- The Thing
- Hocus Pocus
- Driven to Tears
- Rule of Dumb
- Born to Be Wild
- The Pink Purloiner
- Squid Wood
- Best Day Ever
- The Gift of Gum
Season 5
- Night Light
- Rise and Shine
- Waiting
- Fungus Among Us
- Spy Buddies
- Good Ol' Whatshisname (cameo)
- New Digs (cameo)
- Krabs a la Mode
- Roller Cowards
- Bucket Sweet Bucket
- To Love a Patty
- Breath of Fresh Squidward
- Money Talks
- SpongeBob vs. the Patty Gadget
- Slimy Dancing
- Sing a Song of Patrick
- A Flea in Her Dome
- The Donut of Shame
- Atlantis SquarePantis
- Goo Goo Gas (cameo)
- Picture Day
- Pat No Pay
- Blackened Sponge
- The Inmates of Summer
- To Save a Squirrel
- Pest of the West
- 20,000 Patties Under the Sea
- The Battle of Bikini Bottom
- What Ever Happened to SpongeBob?
- The Two Faces of Squidward
- SpongeHenge
- Banned in Bikini Bottom
- Stanley S. SquarePants
Season 6
- House Fancy (cameo)
- Krabby Road
- Spongicus
- Suction Cup Symphony
- Not Normal
- Gone
- The Splinter
- Slide Whistle Stooges
- A Life in a Day
- Sun Bleached
- Giant Squidward
- No Nose Knows
- Patty Caper
- The Krabby Kronicle
- Grooming Gary
- SpongeBob vs. The Big One
- Truth or Square
- Porous Pockets
- Krusty Krushers
- The Card
- Ditchin'
- Grandpappy the Pirate
- Cephalopod Lodge
- Squid's Visit
- To SquarePants or Not to SquarePants
- Shuffleboarding
- Professor Squidward
- Pet or Pests
- Overbooked
- No Hat for Pat
- Toy Store of Doom
- Sand Castles in the Sand
- Chum Bucket Supreme
- Single Cell Anniversary (silent cameo)
- Pineapple Fever
- Chum Caverns
- The Clash of Triton
Season 7
- Tentacle-Vision
- I ♥ Dancing (cameo)
- Growth Spout (silent cameo)
- Stuck in the Wringer
- The Inside Job
- Greasy Buffoons
- Model Sponge
- Yours, Mine and Mine
- The Curse of Bikini Bottom
- Squidward in Clarinetland
- SpongeBob's Last Stand
- Back to the Past
- The Bad Guy Club for Villains
- A Day Without Tears
- The Play's the Thing
- Rodeo Daze
- The Monster Who Came to Bikini Bottom
- Welcome To The Bikini Bottom Triangle
- The Main Drain
- Trenchbillies
- The Great Patty Caper
- That Sinking Feeling
- Karate Star
- Buried in Time
- Enchanted Tiki Dreams
- The Abrasive Side
- Earworm
- Hide and Then What Happens?
- Whelk Attack
- You Don't Know Sponge
- Tunnel of Glove
- The Wreck of the Mauna Loa
- New Fish in Town
- Love That Squid (2 cameos)
- Big Sister Sam
Season 8
- A Friendly Game
- Sentimental Sponge
- Frozen Face Off
- Squidward's School For Grown-Ups
- Oral Report
- Accidents Will Happen
- Sweet and Sour Squid (heard only) not seen
- The Googly Artiste
- Barnacle Face (mentioned) only not seen
- Pet Sitter Pat
- Mermaid Man Begins
- Plankton's Good Eye (cameo)
- House Sittin' for Sandy
- Smoothe Jazz at Bikini Bottom
- Ghoul Fools
- Walking the Plankton (non-speaking cameo at beginning)
- Patrick’s Staycation
- Mr. Krabs Takes a Vacation (cameo at beginning)
- Mooncation
- A SquarePants Family Vacation
- Bubble Troubles
- The Krabby Patty That Ate Bikini Bottom
- Restraining SpongeBob
- Fiasco!
- Are You Happy Now? (silent cameo)
- Planet of the Jellyfish
- Free Samples (cameo)
- Home Sweet Rubble
- InSPONGEiac
- Face Freeze!
- Glove World R.I.P.
- Treats!
- The Good Krabby Name
- Hello Bikini Bottom!
- It's a SpongeBob Christmas!
Season 9
- Extreme Spots
- Squirrel Record (cameo)
- Squid Baby
- Gary's New Toy (cameo)
- Patrick-Man
- Plankton's Pet (cameo)
- Little Yellow Book
- Safe Deposit Krabs
- It Came From Goo Lagoon
- Séance Shméance
- Don't Look Now
- SpongeBob, You're Fired!