| Season 1
|
| File:Mermaid Man and Barnacle Boy 068.png
|
6a
|
"Mermaid Man and Barnacle Boy" (tr • ga)
|
Major, debut; SpongeBob and Patrick try to bring him and Barnacle Boy back.
|
| File:Mermaid Man and Barnacle Boy II 138.png
|
20b
|
"Mermaid Man and Barnacle Boy II" (tr • ga)
|
Major; SpongeBob wins a conch shell in a contest to summon Mermaid Man and Barnacle Boy, where they eventually take him on their daily patrol.
|
| Season 2
|
| File:Mermaid Man and Barnacle Boy III 020.png
|
31a
|
"Mermaid Man and Barnacle Boy III" (tr • ga)
|
Minor; he and Barnacle Boy hire SpongeBob and Patrick to watch their lair.
|
| Season 3
|
| File:Mermaid Man and Barnacle Boy IV 037.png
|
45a
|
"Mermaid Man and Barnacle Boy IV" (tr • ga)
|
Supporting; accidentally leaves his belt, which is found by SpongeBob and attempts to return it to Mermaid Man but drives away before is can return the belt. Later, him and Barnacle alongside the rest of the town are shrink and kick SpongeBob's eye sockets.
|
| File:Mermaid Man and Barnacle Boy V 027.png
|
52b
|
"Mermaid Man and Barnacle Boy V" (tr • ga)
|
Major; Barnacle Boy leaves Mermaid for E.V.I.L., which causes Mermaid to team up with SpongeBob, Squidward, Patrick, and Sandy.
|
| N/A
|
56a
|
"Born Again Krabs" (tr • ga)
|
Mentioned; after SpongeBob is taken away by the Flying Dutchman SpongeBob states "Mermaid Man and Barnacle Boy are the greatest. They're close personal friends of mine. They taught me everything."
|
| Season 4
|
| File:Have You Seen This Snail 016.png
|
63
|
"Have You Seen This Snail?" (tr • ga)
|
Cameo on the Mermaid Man and Barnacle Boy Paddle Ball Set
|
| File:Mermaid Man & Barnacle Boy VI The Motion Picture 190.png
|
67b
|
"Mermaid Man & Barnacle Boy VI: The Motion Picture" (tr • ga)
|
Major; when SpongeBob and Patrick find out that a Mermaid Man and Barnacle Boy movie is in production and are using actors, so they make their own with the real heroes.
|
| Season 5
|
| File:Night Light 166.png
|
82b
|
"Night Light" (tr • ga)
|
Minor; SpongeBob and Patrick accidentally summon him and Barnacle Boy when they shine a lighthouse which Mermaid Man and Barnacle Boy, which hints them that there is evil afoot.
|
| File:Mermaid Man vs. SpongeBob 096.png
|
94b
|
"Mermaid Man vs. SpongeBob" (tr • ga)
|
Major; Plankton hypnotizes Mermaid Man and Barnacle Boy when he discovers the Krusty Krab has themed after them.
|
| Season 6
|
| File:The Card 033.pngFile:The Card 197.png
|
113b
|
"The Card" (tr • ga)
|
Cameo on cards and card packs
|
| File:Ditchin' 070.png
|
114b
|
"Ditchin'" (tr • ga)
|
Supporting; seen signing books with Barnacle Boy.
|
| File:Shuffleboarding 057.png
|
117a
|
"Shuffleboarding" (tr • ga)
|
Major; he and Barnacle Boy are accidentally injured by SpongeBob and Patrick.
|
| File:Toy Store of Doom 022.png
|
120b
|
"Toy Store of Doom" (tr • ga)
|
Cameo as a toy which Patrick chews on.
|
| Season 7
|
| File:SpongeBob's Last Stand 064.png
|
134
|
"SpongeBob's Last Stand" (tr • ga)
|
Cameo; helps the Bikini Bottom remove the Shelly Superhighway.
|
| File:Back to the Past 115.png
|
135a
|
"Back to the Past" (tr • ga)
|
Major; SpongeBob, Patrick, Mermaid Man, and Barnacle Boy go back in time.
|
| File:The Bad Guy Club for Villains 118.png
|
135b
|
"The Bad Guy Club for Villains" (tr • ga)
|
Major (as younger self); investigates what the villains are up to.
|
| N/A
|
136a
|
"A Day Without Tears" (tr • ga)
|
Mentioned; while watching the news it is mentioned that The Mermaid Man and Barnacle Boy Show will be shown seven times a day instead of eight.
|
| File:The Cent of Money 192.png
|
139b
|
"The Cent of Money" (tr • ga)
|
Cameo on card
|
| Season 8
|
| File:Mermaid Man Begins 076.png
|
163a
|
"Mermaid Man Begins" (tr • ga)
|
Major; Mermaid Man tells SpongeBob and Patrick about how him and Barnacle Boy became superheroes.
|
| N/A
|
174b
|
"For Here or to Go" (tr • ga)
|
Mentioned; Incidental 92 guesses Mermaid Man when asked how many sesame seeds are in the Sesame seed jar.
|
| File:Super Evil Aquatic Villain Team Up is Go! 196.png
|
176a
|
"Super Evil Aquatic Villain Team Up is Go!" (tr • ga)
|
Major; he and Barnacle Boy arrest Man Ray.
|
| Season 9
|
| File:Patrick-Man! 035.png
|
180a
|
"Patrick-Man!" (tr • ga)
|
Minor (last episode produced before Ernest Borgnine's death); seen in an advertisement of The Adventures of Mermaid Man and Barnacle Boy.
|
| File:SpongeBob LongPants 001.png
|
195a
|
"SpongeBob LongPants" (tr • ga)
|
Cameos on posters and billboards for The Dark Tide Rises
|
| File:Mall Girl Pearl 070.png
|
197a
|
"Mall Girl Pearl" (tr • ga)
|
Cameo; seen at the Bikini Bottom Mall.
|
| File:Snail Mail 005.png
|
202b
|
"Snail Mail" (tr • ga)
|
Cameo in a magazine.
|
| Season 10
|
| File:Mermaid Pants 135.png
|
205b
|
"Mermaid Pants" (tr • ga)
|
Cameo in a magazine.
|
| File:Plankton Gets the Boot 076.png
|
209b
|
"Plankton Gets the Boot" (tr • ga)
|
Cameo as a toy.
|
| File:Trident Trouble 027.png
|
211b
|
"Trident Trouble" (tr • ga)
|
Cameo in a magazine.
|
| Season 11
|
| File:Man Ray Returns 088.png
|
219a
|
"Man Ray Returns" (tr • ga)
|
Cameo (non speaking)
|
| File:The Legend of Boo-Kini Bottom 004.png
|
220
|
"The Legend of Boo-Kini Bottom" (tr • ga)
|
Costume
|
| File:Bunny Hunt 110.png
|
223b
|
"Bunny Hunt" (tr • ga)
|
Cameo in SpongeBob's comic books.
|
| File:Squid Noir 131.png
|
224a
|
"Squid Noir" (tr • ga)
|
Appearance as an action figure.
|
| File:Drive Happy 011.png
|
227a
|
"Drive Happy" (tr • ga)
|
Cameo as a bobble-head.
|
| File:Bottle Burglars 063.png
|
230b
|
"Bottle Burglars" (tr • ga)
|
Cameo in a magazine.
|
| File:Call the Cops 155.png
|
236a
|
"Call the Cops" (tr • ga)
|
Cameo in a magazine.
|
| File:Goons on the Moon 023.png
|
237
|
"Goons on the Moon" (tr • ga)
|
Cameo in a magazine.
|
| File:Appointment TV 013.png
|
238a
|
"Appointment TV" (tr • ga)
|
Cameo in SpongeBob's MM&BB franchise; Acted out by Larry the Lobster.
|
| Season 12
|
| File:The Krusty Slammer 154.png
|
244a
|
"The Krusty Slammer" (tr • ga)
|
Cameo on television.
|
| File:Swamp Mates 054.png
|
247a
|
"Swamp Mates" (tr • ga)
|
Non-speaking cameo (younger)
|
| File:SpongeBob's Big Birthday Blowout 398.png
|
254-255
|
"SpongeBob's Big Birthday Blowout" (tr • ga)
|
Cameo as a toy; acted out by Bubble Bass.
|
| File:Bubble Bass's Tab 100.png
|
265a
|
"Bubble Bass's Tab" (tr • ga)
|
Cameo on a sleeping bag
|
| Season 13
|
| File:The Big Bad Bubble Bass 008.png
|
274a
|
"The Big Bad Bubble Bass" (tr • ga)
|
Cameo as alarm clock and in poster
|
| File:Captain Pipsqueak 025.png
|
277a
|
"Captain Pipsqueak" (tr • ga)
|
Cameo on TV
|
| File:Salty Sponge 148.png
|
281a
|
"Salty Sponge" (tr • ga)
|
Cameo on a comic book cover
|
| File:SpongeBob on Parade 149.png
|
284b
|
"SpongeBob on Parade" (tr • ga)
|
2 cameos; he and Barnacle Boy are part of the Bikini Bottom Parade.
|
| Season 14
|
| File:Necro-Nom-Nom-Nom-I-Con 103.png
|
299b
|
"Necro-Nom-Nom-Nom-I-Con" (tr • ga)
|
Cameo on Bubble Bass's pajamas
|
| File:The Dirty Bubble Bass 008.png
|
305a
|
"The Dirty Bubble Bass" (tr • ga)
|
Cameo on comic book shelf
|
| Season 15
|
| File:Biscuit Ballyhoo 151.png
|
310a
|
"Biscuit Ballyhoo" (tr • ga)
|
Cameo in a frame
|
| File:Captain Quasar- The Next Iteration 046.png
|
319b
|
"Captain Quasar: The Next Iteration" (tr • ga)
|
Cameo; Cameo as a poster.
|
