Watch The Grim Adventures of Billy and Mandy Season 5 Episode 10 Online with Multi Subtitles - OnionPlay

Watch Watch The Grim Adventures of Billy and Mandy Season 5 Episode 10 Online with Multi Subtitles - OnionPlay on OnionPlay - When Billy and Irwin start making prank phone calls, everyone knows that Billy is behind the calls, as every phone has a caller ID. While Billy searches in Grim's trunk in the basement for something to confront the caller ID, he finds a skull-shaped phone with no caller ID. Grim warns him not to use the phone, as it is used to call the ancient demon Cthulhu, whose mere appearance drives people insane, and if awakened, will cause the destruction of the world. Despite Grim's warning, Billy and Irwin still use the phone and are absorbed by it through tentacles.