He is a turquoise octopus who closely resembles his cousin, but has six black hairs on his head and wears glasses, a white shirt, and a light brown tie. He has the same light yellow eyes with mahogany brown pupils as Squidward.
He does not get along with Squidward as he was told by his mother that Squidward was a "fuddy-duddy stick-in-the-muddy" and found out that she was right.
- In Revenge of the Flying Dutchman, one of the things Squidward has in his yard sale is a beehive that he says his cousin on the coast gave him, which could be referring to Squidmund or Squidward's teenage cousin.
- His name is a play on the name Edmund.
|Cephalopods (V • E)|
Octopus sailor • Orville • Mrs. Tentacles • Mr. Tentacles • Squidette • Squidward Tentacles • Squilliam Fancyson • Squidina • Squidly Tentacles • Squog • Roger • Dr. Charley Horse • Lodge leader • Squidward's cousin • Grandma Tentacles • Kelpy G • Squid massage therapist • Octopus vendor • Sir Cecil • Lab Squidward • Unnamed octopus • Squidmund • Red Mist Squidward • Squilvia • Squidabeth • Lady Squidward • Tentacle Acres gatekeeper • Tentacle Acres groundskeeper • Tentacle Acres spokesoctopus • Claire St. Claire • Mel • Incidental 11