Actually a nice people-oriented show, so can be appreciated by adults if they give it a chance, despite the "boyish" humor at times (which is probably even less than most other modern cartoons. Animation is really not as classically "cartooney" either, so it's almost like watching a live action sitcom).
Ed ERBP (ExxP. Go figure him!)
Edd ISFJ. One might think right away that he's so intellectual/scientific and therefore a T, but when dealing with others, he shows a lot of Si-Fe (traditional, into "accepted social norms/etiquette", etc). Ti then becomes his relief, and this makes sense; only it has developed really early for him, which is part of what makes him so exceptional. It also gets "unsettling" when he overdoes it and expects others to adopt his principles.
Kevin ASTP Probably leans towards I, but seems somewhat outgoing
Lee Kanker ENTJ