Squidward Tentacles might be one of the most relatable characters in 'SpongeBob SquarePants' if you’ve ever had a job you hated. Early on, he’s just this grumpy neighbor who’s perpetually annoyed by SpongeBob’s antics, but over time, you see glimpses of something deeper. There are episodes where he actually tries to pursue his passions—like playing the clarinet or creating art—only to be crushed by reality (or his own shortcomings). It’s kind of tragic, but also weirdly inspiring? Like, he never fully gives up, even when the universe seems determined to mock him.
Later seasons dial up his misery for comedy, but there’s also this subtle layer of self-awareness. He’ll occasionally have moments where he acknowledges his own bitterness, like in 'Band Geeks' when he temporarily drops the cynicism to lead the band. It’s not a linear arc, but you can see flashes of someone who’s trapped in his own mindset but occasionally wonders if there’s another way. The show never lets him win for long, though—classic Squidward.