The Devil (Cuphead)

"Welching on me like all the others, eh? I'll teach you for backing out of a deal! HAVE AT YOU!"

- The Devil after the player refuses to give him the contracts.

The Devil is the main antagonist of the run-and-gun video game Cuphead: Don't Deal With The Devil. He forces the game's protagonists Cuphead and Mugman to collect Soul Contracts from various inhabitants of Inkwell Isles or he will take their souls.

History
After they disobey Elder Kettle and they end up in the Devil's Casino, Cuphead and Mugman were on a winning streak while playing at the Craps table. Suddenly, the Devil approach them and, impressed by their streak, he offered the pair all the loot in the casino if they win the next roll, however, if they lose, he would take their souls.

Cuphead, blinded by greed, threw the dice before Mugman could stop him and came up snake-eyes. Having lost, the brothers begged the Devil not to take their souls and if there was anything else they could give him in exchange. The Devil told them if they can gather the Soul Contracts from his other debtors before midnight he would spare them and booted them out of his casnio. He then sent out his right-hand man King Dice to make sure the pair fulfill their end of the bargain.

It soon becomes evident that the Devil has control over parts of Inkwell Isles and that all of the debtors he has presumably made deals with have become aggressive and violent monsters that Cuphead and Mugman will be forced to fight. Eventually, the brothers obtain all the contracts and confront the Devil in his throne room. The Devil congratulated the pair and tells them to give him all the contracts plus offers in joining him to wreak some havoc.

Bad Ending
In the Bad Ending, Cuphead and Mugman accept The Devil's offer. The Devil, delighted with their choice, turns the pair into Demons and watches happily as they both manically laugh.

Good Ending
In the Good Ending, Cuphead and Mugman refuse The Devil's offer, enraging him and prompting him to fight the brothers. In the end, the Devil is defeated and all the Soul Contracts are destroyed by Cuphead and Mugman, thus freeing Inkwell Isles and its inhabitants from the Devil's clutches.