SpongeBob: Seven Deadly Sins

Below is a theory that SpongeBob's friends represent the 7 sins.
 * Pride: Sandy. Pride is a deep satisfaction derived from one's own achievements. Sandy is deeply proud of her home country, her athletic abilities, and her career as a scientist.
 * Greed: Mr. Krabs. Greed is the selfish desire for something, especially wealth or power. Krabs fits this sin perfectly, since he is obsessed with collecting money just so he can have riches for himself.
 * Lust: Pearl. Lust is intense sexual desire. Pearl is depicted as boy-crazy and obsessed with male fish stars.
 * Envy: Plankton. Envy is an insatiable desire. Plankton is deeply envious of the success that his rival Mr. Krabs has achieved.
 * Gluttony: Mrs. Puff. Gluttony is the overindulgence of food. Mrs. Puff is shown to adore food, from chocolate cake to pasta, and is fat.
 * Wrath: Squidward. Wrath is uncontrolled feelings of anger and hatred. Squidward hates his life, his job, his neighbors, and practically everything else about Bikini Bottom.
 * Sloth: Patrick. Sloth is excessive laziness. Patrick is ridiculously lazy; he is unemployed, lives under a rock, and sleeps a lot.