The Devil (Michael Green)

Michael Green's version of The Devil is a manifestation of Michael Green's sadness, stress, and potential repressed Angry Grandpa-like behavior (although this has yet to be confirmed or denied, as he was only appearing in videos for a relatively short period of time. However, we've seen similar behavior coming out of Jeff Sr., who had similar anger problems caused by the affects of wearing the original necklace).

History
He first appears in MCJUGGERNUGGETS DESTROYS ANGRY GRANDPA'S ASHES!, where Michael is given a necklace with Angry Grandpa's ashes imbued into it by Jesse/The Devil. He appears a few more times throughout both Michael's and Jesse's videos. However, in KIDBEHINDACAMERA EATS PSYCHO DAD'S ICE CREAM!, Michael claims to have lost the necklace, much to the dismay of The Devil (Jesse). The fate of this character is currently unknown.

Trivia

 * It is also possibly revealed that Michael's Devil possessed Michael's brother Charlie, because ever since after the events of the LSD Incident, he is still harassing and bullying people online, suggesting that The Devil is either possessing Charlie and/or by making him his pawn.
 * It is also possible that Michael's Devil existed a while before 2019 and possibly could have cursed Michael's new house he bought back in 2016, which would explain why his house is haunted.