Crogaster

Description
Crogaster is a hybrid between Kyrie's favorite pokemon, Crobat and Gastly. He wears a white lab gown, has a floating purple head, and wings.

Personality
Crogaster is a smart scientist. He likes being alone when working, but also sometimes likes the help of others.

Backstory
Crogaster was the royal scientist who worked with Maven before he became king. They worked on a lot of projects together, such as the magical farms and Kichian's fireproof sweater. However, Crogaster died while building the Generator. Maven continued on his work without Crogaster before becoming king 2 years later.

Trivia

 * Even though Crogaster was a ghost, he died a second time.
 * It is unknown who the king of the underground was at that time.