Hellfish Abe

 is a limited-time premium costume for Grampa released on March 21, 2017, as a Gil Deal during the Rommelwood Academy 2017 Event. He is unlocked with the Hellfish Bonanza Bundle.

About
The Flying Hellfish (also referred to as just the Hellfish) was the military unit Abraham Simpson, Charles Montgomery Burns and several other Springfieldians served in during World War II.