Charlie is said to have "the brain of a con man, but the heart of a marshmallow," being that he's clever, fun-loving, mischievous, charming, greedy, sneaky, deceiving, and a party animal. But initially, he doesn't mean any harm as he has been shown times before to have a very caring, and compassionate side. In the first film, he starts off roguish, hotheaded, and menacing (but not as malicious as Carface) and isn't well known for doing a lot of good deeds, but because he's a dog (since dogs are naturally good and loyal like what Annabelle said before) he was allowed into heaven. But with his time spent with Anne-Marie, he began to warm up a lot more, even going far as to sacrifice his own life for hers after the final showdown with Carface near the end of the film. In the second film, tv series, and Christmas special, Charlie's attitude slightly changes years after the events of the first one, he's become more laid back and friendlier, but is still scheming and mischievous as well as selfish, lazy, and dishonest at times, as he would rather ignore his responsibilities just to goof off and live the life of a normal dog. But when it comes to his friends and their well-being, he always comes around and makes up for his wrong doings.