based on some fanfics and creepypastas
Cuphead came running into his house.
Cuphead tackled Mugman and punched him until he wasn't moving anymore.
Mugman was now tied up and dead.
Cuphead cut Mugman's wrists and put salt on the blood and licked it, and sucked a little bit of blood of Mugman.
08/06/2016
I had a dream where my brother says that I am on a dangerous place and I need to leave. I don't leave, and I ran on this cave only to found my dead body with Mugman staring staring at it.
Cuphead walked holding Mugman's corpse.
He stood in front of a throne.
"You know what to do?" The Devil said.
"Yes, master." Cuphead said.
"Then go ahead." Devil said.
Mugman's burned body was found inside a abandoned house and Cuphead escaped.
After dying, Mugman said:
"Why are you doing this with me?"
"BECAUSE MASTER DEVIL TOLD ME TO DO IT FOR HIM." Cuphead said.
"LEAVE ME ALONE, DEMON!!!" Mugman yelled.