Hi Five Ghost

Hi Five Ghost, (also known as Hi Fives, HFG, or Fives), is the seventh main character of Regular Show. He made his first appearance in the non-canon "Pilot", along with the Season 1 episode "Just Set Up the Chairs". He is voiced by J.G. Quintel.

Appearance
Hi Five Ghost, as his name states, is a ghost with an arm and hand sticking out from the top of his head. His body is white but slightly transparent. He does not seem to possess any eyeballs and his mouth is usually seen open when smiling or frowning.

During the time montage, Hi Five Ghost has grown a white goatee and has gained laugh lines, making him look older in appearance. He also wore two bracelets on his arm and a red beanie.

During the Park's 25 year reunion, Hi Five Ghost strangely looks identical to his younger self.

Personality
While the majority of the time Hi-Five Ghost is quiet and stands in the background, he shown to be supportive, kind, logical, and sometimes scatter-brained depending on the time. He is very loyal to his best friend Muscleman, always supporting him even when he's at his nastiest. Despite being a ghost, its been shown that the subject of death makes him incredibly sad as shown in "Trucker Hall of Fame". According to the scientist in "The Button", he states that Hi-Five Ghost is the most logical out of the park workers.