Barnacle Boy/appearances

Character

Gallery

Appearances

Bold means character played a Major role

Episodes

Season 1

1. Mermaid Man and Barnacle Boy (debut)
2. Mermaid Man and Barnacle Boy II

Season 2

1. Mermaid Man and Barnacle Boy III

Season 3

1. Mermaid Man and Barnacle Boy IV
2. Mermaid Man and Barnacle Boy V

Season 4

1. Have You Seen This Snail? (image/mentioned)
2. Mermaid Man and Barnacle Boy VI: The Motion Picture

Season 5

1. Night Light
2. Mermaid Man vs. SpongeBob

Season 6

1. The Card (non-speaking cameo on card)
2. Ditchin'
3. Shuffleboarding

Season 7

1. Back to the Past
2. The Bad Guy Club for Villains (as younger self)
3. SpongeBob's Last Stand (cameos)
4. The Cent of Money (non-speaking cameo, image)

Season 8

1. Mermaid Man Begins
2. Super Evil Aquatic Villain Team Up is Go!

Season 9

PatrickMan

Movies

1. The SpongeBob SquarePants Movie (seen on a poster in SpongeBob's room)