The Grim Adventures of Billy and Mandy Season 1 Episode 21

The Grim Adventures of Billy and Mandy Season 1 Episode 21 SerialGo Watch Online Streaming — Mandy and her parents leave town for a day, which makes Billy feel lonely. Then, Grim uses his supernatural powers to create a fake Mandy out of doll parts and toys for Billy to play with. However, the "new" Mandy is too aggressive with Billy, and he starts to fear her. The next day, the real Mandy comes back home and immediately destroys the new Mandy while she is on the swing.