Cuphead

Cuphead (subtitled "Don't Deal with the Devil") is a run and gun indie video game developed and published by StudioMDHR. First announced in 2014, the game was released for Microsoft Windows and Xbox One in September 2017.

Cuphead was inspired by the rubber hose style of animation used in cartoons of the 1930s, such as the work of studios Fleischer and Walt Disney Animation, seeking to emulate their subversive and surrealist qualities. The game features one or two players taking control of animated characters Cuphead and his brother Mugman to fight through several levels that culminate in boss fights as to repay their debt to the devil.

Murine Corps
The boss from this level, Werner Werman, pilots a tank-like device for most of the boss fight, but in the final phase, a cat breaks through the wall, swallows Werman whole, and begins attacking the player through various means, including what appears to be ghost rodents that float out of the cat's mouth. At the end of the boss fight, the cat's face falls off, revealing that it's actually a machine piloted by an injured (but alive) Werman. It is unclear where the rodent ghosts come from, whether they be deceased prisoners of war or fakes produced by special effects, similar to the Wizard of Oz or the various monster hoaxes found in the Scooby Doo cartoons.

Predator:

 * Random Cat (Actually a Battle Mech)

Prey:

 * Werner Werman
 * Rodent POWs (implied)

High Seas Hi-Jinx!
During parts of this boss fight, Cala Maria, a giant gorgon-like sea creature, spits ghost pirates out of her mouth to attack the player, strongly implying that she has swallowed many victims whole.

Predator:

 * Cala Maria

Prey:

 * Various Pirates and Sailors (implied)

Gnome Way Out
In the first phase, Glumstone is shown having gnomes in his mouth brewing stew. At the end of the second phase, he swallows the player(s), resulting in Phase 3 taking place inside his stomach.

Predator:

 * Glumstone the Giant

Prey:

 * Gnomes
 * Cuphead (optional)
 * Mugman (optional)
 * Ms. Chalice (optional0