Casper, also known as Casper The Friendly Ghost, is an over 200-year-old young ghost boy , the nephew of the Ghostly Trio and the main protagonist. He has been forced to attend Scare School to learn how to scare humans and stop being so friendly or else he will be banished to the Valley of the Shadows. In Scare School, Casper's closest best friends are Mantha and Ra who he loves like a family.
Casper is overly friendly and helpful, which is both his strength and weakness. He is quick-witted, being able to come up with speeches that convince people to go along with him. He is also independent, strong, never forgets who he is and is, loyal to his friends.
Casper knows he is supposed to be scary, not friendly, but he doesn't understand why people and creatures just can't get along. Casper's attachment to both the "fleshy" and creature worlds, while not quite belonging to either, often leads to problems at Scare School and he continuously faces the oppressions of Thatch, a vampire bully and the Headmasters, Alder and Dash, but he always finds the courage to face any obstacles heads on. As the series goes on, he shows signs of romantic feelings for Mantha.Casper the Friendly Ghost (voiced by Matthew Geczy, Mae Questel, and Cecil Roy) is a character in both Casper's Scare School and Casper & friends.
Casper is extremely friendly and kind and isn't afraid of being himself. He is always willing to help people, even if they are his enemies. He is willing to go to great lenghts and take right risks to help his loved ones. Casper sometimes has low self-esteem as seen in "Slugby". Although he can get scared easily, Casper is also very brave, being possibly one of the very few living beings that isn't afraid of Kibosh.
In season 2, Casper is somewhat harsher and doesn't seem so upset with the idea of scaring humans as he is even becoming a better student than Thatch.
Casper is a small, white ghost with a round head that is almost as big as his body and a somewhat pudgy body. In the movie he had violet eyes, in the first season of the series his eyes very light blue while in season 2 they are dark blue and unlike his family, he as feet.
When he hangs out with Jimmy in Deedstown he wears a blue hoodie with the hood always covering his head, navy blue jeans and black sneakers to avoid scaring anyone.