I dont have a favourite regular character, they are all very funny.
I like Ida because she is so mean (not that I like mean people, but Ida is kind of funny-mean).
Craig is sometimes a little annoying but I like the character too, is funny. I like even more his cat, cuz I used to have a very similar cat, actually, it was almost identical, except for the color; mine was pink.
The Krelboynes are funny most of the time, but they can be a little annoying as well. Besides, they are a little afeminated, if I remember well.
Commandant Spangler was one of the funniest, he is not a joker or a very active character, but his attitude and even his lines are hilarious. And maybe Im a little morbid, but I think its very funny that he lacks an arm, a leg, two fingers, an eye... you kind of wonder if he was cursed or something!
Richie is one of the character I dont like very much. He has funny moments, but most of the time he is just plain stupid (dumber than Reese), and sometimes even disgusting.
The Marlin Academy cadets were always funny, so were (most of the time), Eric and Pete in Alaska.
Lavernia was horrible, but she was so horrible that she was hilarious as well. When I first saw her, I couldnt believe there was such a horrible woman!!!
Abe and Kitty are funny. I dont remember Hal's poker buddies. They were all black, weren't they?
And Otto and Gretchen... maybe they are a little stupid, all right, but they are probably the only good persons in the entire show. I still can't believe Otto sued Francis. He was like a son to him.