Top Ten SpongeBob Characters That Are the Least Alike

One is always happy and the other is sad.

Pearl likes spending all her money and Krabs likes to keep it all.

The strange thing is, Pearl is Mr. Krab's daughter!

Patrick is dumb Sandy is smart. And, Patrick's house is so simple while Sandy's is very complex

Sandy is really smart and Patrick is dumb.

Princess Mindy has a heart of platnimum, while Puffy Fluffy made Gary's life almost dead.

Mindy is awesome. Puffy Fluffy deserves to be thrown into lava

If you mean size. Then are very different

Patrick is the lovable good-natured oaf (At least in older ones, he's a jerk in new ones), and Plankton is the evil genius (in older ones, nowadays, the villain seems to be Mr. Krabs)