Out of boredom I got this from a friend. Believe or not, it’s up to you. I don’t care either because I do not know the truth myself.
Sandy = Lust – She’s obsessed with karate, and we all know what that’s a metaphor for in the world of Spongebob
Patrick = Gluttony – Big Eater.
Mr. Krabs = Greed – In love with money.
Mrs. Puff = Sloth – Hates her job and enjoys doing nothing.
Plankton = Envy – Jealous of Mr. Krabs’ success.
Squidward = Wrath – Hates his neighbors and the world in general.
Spongebob = Pride – Always tries to be perfect and gets upset over minor details.