Sam is a boo and the main protagonist in Boo: The Spooky Warrior. He is a young Boo at the age of about 12. Despite his age, he is actually quite powerful being able to cast Ghostly Magic and Jinxes.
Sam, being a boo, is quite timid and shy, this is seen in Boo: The Spooky Warrior where he cowers when he sees the giant red beetle. He is also shown to have a low self-esteem as he was about to give up when a boulder blocked his path. Despite this, he is very heroic and will always keep trying to reach his goals.