What is the grim adventures of billy and mandy characters?

1. Billy: A friendly, innocent and naive boy who is always ready to help his friends. He is characterized by his blue T-shirt, red shorts, and constant smiling.

2. Mandy: A dark, cynical and sarcastic girl who is ruthless and has a twisted sense of humor. She is characterized by her pink dress, black shoes and her purple hair with a skull hairpin.

3. Grim Reaper: A shape-shifting, supernatural entity who works as a paranormal assistant to Billy and Mandy. He is characterized by his skeleton-like appearance, his black robe, and his scythe.

4. Irwin: A nerdy and clumsy boy who is secretly in love with Mandy. He is characterized by his thick glasses, his brown sweater vest and his Bow Tie.

5. Dracula: A suave, charming, and sophisticated vampire who is obsessed with Mandy. He is characterized by his black suit and cape, and his British accent.

6. Hoss Delgado: A muscular, tough and experienced paranormal hunter who is often called upon by Billy and Mandy to help them with their supernatural adventures. He is characterized by his rugged appearance, his leather jacket and his cowboy hat.

7. Nergal: A demonic entity who is often shown as a villain. He is characterized by his black and red butterfly wings, his red skin and his glowing yellow eyes.

These characters, along with many others, form the core cast of The Grim Adventures of Billy and Mandy and have become popular among fans of the show.