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 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.
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.
Ghost Physiology: As a ghost, Casper possess various abilities.
Body Manipulation: Casper can manipulate his lower body by transforming it into legs to walk and to have a ghostly tail when flying.
Fly: A standard ghost ability.
Intangibility: Casper can phase through solid matter, as well as people including monsters. When he phases through people or monsters, like what he did to Thatch, they fill a sudden chill.
Invisibility: Casper can turn invisible to hide from people and for stealth approaches. He can also be intangible as well as invisible as the same time.
Possession: Casper also has the ability to control people's bodies. Although he doesn't seem to quite master it, as seen in I'm Not A Hero he took control of Thatch's body but he was still talking, meaning Casper can only control the motor functions of the brain.
Kindness: Casper is extremely kind, up to the point were he literally can’t resist helping people.
Scaring: Casper is exceptionally skilled at scaring humans, even when he isn't trying to. His ability to scare may be better than Kibosh's as seen in "Accidental Hero".
Leadership: Casper has shown notable leadership skills in several episodes such as in “Power Outage (Part 3 and 4)” and “Slugby”.
Bravery: Casper is very brave since he seems to be the only creature who isn’t afraid of Kibosh and wasn’t intimidated by the school faculty’s scary act in “Slugby”.
Strength: Casper is rather strong physically as he is able to carry other kids in his arms thourgh long distances without straining in several episodes such as "Paramedic Paranormal".
Casper acquired many allies due to his friendly, helpful personality; however, his friendliness also resulted on him being looked down upon his fellow creatur