Tan M&M

Tan M&M (died March 2020), also known as Sith Man, was an M&M supervillain and mass-murderer whose goal was to kill all superpowered individuals after various conflicts involving these beings tore apart his family.

Relatives
He was the brother of the late Margaret M&M and the uncle of both SpongeBob SquarePants and Purple M&M, as well as Brown M&M's cousin and Blue M&M's brother. He rented out Brown M&M's house.

Biography
Tan M&M lost his powers after taking Team InstAnt's superpower cure, which eventually caused him to desert his crusade.

He was then killed by a future time-traveling Purple M&M, who had become Sith Woman because of her uncle's views.