What is the name of the big old man who eats bad jellies?

Neptune (or Poseidon):

Roman Mythology; the god of water and of the sea. Greek equivalent Poseidon.

Arrrr! That be Poseidon me matey. He were nowhere near tha man when them Romans took ‘em in.

That makes me wonder what this squid’s name is.

The Greek Grauchi, and then the Roman Grumphi.

Ha!

Awww… I thought someone would come up with a cool name for him.
But yeah, thanks for all the information :)

@dxs he sure looks PO’d at the Yellow Submarine…

I always thought it was a toy he was playing with.