He haunts Bikini Bottom with amusingly mixed success, like when SpongeBob winds up scaringhimin his debut episode.

He even has to move into the sea sponge’s home during a scaring-slump.

The Flying Dutchman isn’t always trying to frighten people, though.

The ghost of a pirate looms above the characters on a pirate ship in SpongeBob SquarePants.

Image via Nickelodeon

It seems the Dutchman is full of surprises.

Of course, he’s too squeamish to administer the snail plasma.

He also refuses to treat SpongeBob when the poor sponge enters the hospital covered in boo-boo’s.

Spongebob Poster

The doctor’s condescension is priceless, suggesting Mr. Squarepants visit Weenie Hut General instead.

Poor Fred isn’t just here to be in pain, though.

What a versatile (and fixable) fish!

Mr. Krabs sells SpongeBob’s soul to the Flying Dutchman while Squidward watches.

Image via Nickelodeon

He has done a lot to earn our respect.

He’s had a cane, no cane, and practically just as many voices as bodies.

Is this a conspiracy?

A purple fish doctor opens his mouth and holds a pencil thoughtfully in SpongeBob SquarePants.

Image via Nickelodeon

Scooter would literally rather die than be unable to experience the waves.

He even likes it when a bigger fish repeatedly bounces his head off a rock in the water.

Because it’s fun.

fred-the-fish-smiling-and-reeling-in-his-own-leg-on-a-fishing-hook

Image via Nickelodeon

This fish has got some nerve and the power to pass through the television screen to boot.

Reporting the news is normally charming enough.

Take his introduction to Goo Lagoon: “A stinky mud puddle to you and me.

Old-Man-Jenkins-smiling-skinny-green-with-a-big-beard-and-broken-finger

Image via Nickelodeon

But to the inhabitants of Bikini Bottom, a wonderful stinky mud puddle.”

Puff

Voiced by Mary Jo Catlett

Mrs.

Puff (Mary Jo Catlett) is quite complicated for a side character.

scooter-laughs-with-eyes-closed-and-slaps-spongebob-on-the-back

For the most part, she is the boating instructor who’s comically troubled by her consistently catastrophic student.

Is this a common occurrence?

But then she stops herself: “No.

realistic-fish-head-news-anchor-emerges-from-tv-in-front-of-spongebob

Image via Nickelodeon

Whatever the answer to that may be, her backstory is the most fascinating and overlooked in the cast.

Whatever form she takes, her arguments with Plankton are always welcome.

She may have cost a lot of money to make, but this computer is priceless.

blue-and-white-time-card-that-reads-several-bad-puns-later

Image via Nickelodeon

1Harold

Harold’s got a short temper, and it always delivers.

For Harold, vigilante justice is the name of the game.

Watch on Paramount+

NEXT:‘SpongeBob SquarePants 10 Best Musical Numbers, Ranked’

SpongeBob holds up a written note to Mrs. Puff in SpongeBob SquarePants.

Image via Nickelodeon

karen-the-computer-on-four-wheels-facing-plankton-on-a-ladder

Image via Nickelodeon

Blue-Fish-Harold-screaming-angrily

Image via Nickelodeon

Spongebob Squarepants