Well, they never actually said his Grammas name, but I think it's Gram Grams...
Grandma
Mystery lol!
Mystery
BUTHOLECILIVAN
PoopScooper
The goo-la-goon
Black Jack
Harold Squarepants
Jr.
Armor Abs.
ethel
His name is Larry the Lobster he is Spongebobs lifegaurd friend
her name is Lowis SquarePants(:0 or mrs.SQUAREPANTS