Kibosh confessing to Casper that he used to be just like him when he was Casper's age in the movie.
Kibosh's adorable hand-on-the-shoulder-comfort moment with Casper in "Vote for Casper". It's especially heartwarming because Kibosh always tries to avoid being nice to creatures.
Idiot Plot: The plot of "Vote for Casper" relies on Thatch and his friends tricking Casper and Mantha into believing they're each trying to sabotage the other's campaign.
Jerkass Woobie: Sure, Mosshead might be annoying and kind of an Ungrateful Bastard, but you can't help but feel bad for him when his family went to a condo development and wouldn't take him, leaving him homeless.
Ship Tease; The episode "The Day The Professor Croaked" teases both Nurse/Professor Burns and Kibosh/Hedy. When Kibosh accidentaly kisses Hedy's head/crystal ball neither of them, especially Kibosh, seemed bothered by it. He even passed Hedy for everything during the school's inspection just for her "perfect caligraphy" and seemed lovestruck until he left the classroom. The nurse also was more than happy to kiss Professor Burns to change him back to normal when everyone thought he had turned himself into a toad.
The Woobie: Wolfie, in some ways. He was a minor character in the second season, and now he is just a loner, and now isn't really a part of Casper's crew. In fact, he had a neutral relationship with them and becomes rather distant towards Casper and everyone else.