Squidward
Squidward's personality is grumpy, hot-tempered, selfish, Angus, and of course, miserable. In spite of this, he is still one of the most

intelligent characters, and out of the ten major characters, he can be categorized as the most educated one, along with Sandy, Plankton and Gary.

He has a sarcastic attitude and sees others as uncivilized morons, while failing to accept his own personal shortcomings. Squidward sees himself as

misunderstood and unappreciated, blaming society for his failures.