Nick Nonsense: The title character. Nick is wacky, optimistic, energetic, chaotic, dimwitted, oblivious, and well… nonsensical. He can make an adventure out of even the most simple of tasks, assuming he completes it fully. He may be stupid, irresponsible, and kind of a troublemaker, but he is well-intended and cares for his friends.
Liam: Nick’s best friend and roommate. Liam is the more practical character of the group, as he seems to be the only normal guy in a world of comedic cartoons. Usually getting dragged in with Nick and his weirdness, he reacts realistically to problems and absurdities. He also keeps Nick away from danger as much as he can.
Evil Nick: The stereotypical evil inventor. Evil Nick plans on ruling the world, but killing Nick his is main priority. He is the polar opposite of Nick, being grumpy, ill willed, callous, and arrogant. While he may be brilliant enough to make inventions, he never seems to win and has his plans backfire. Nick, however, doesn’t know that Evil Nick loathes him and views them as friends.
DuckDuck: The talking duck. He is used as a sidekick for Evil Nick, being the punching bag/butt-monkey. DuckDuck is sarcastic and apathetic for the most part, but still does what he is told (mainly just to see Evil Nick fail his scheme).