Tucker Foley is one of Danny Fenton's two best friends and a huge techno-obsessed boy. He uses his expertise in the field of technology to help Danny fight ghosts. Tucker is a very optimistic, light-hearted joker. He enjoys talking but often does not know when to keep his mouth shut, causing him to blurt out more than he should or cause trouble for his friends. His cloying, geeky, and appealing nature is not popular with the other students of Casper High and he generally has a bad reputation amongst them.