First Appearance: Gremlin Squad - Web Comic
Finn is a fun loving, thrill seeking, gold fish with a jet pack. While he supports the allies during World War II, it's very clear that he's only there until it stops being fun for him.
With his friends "Hornet" and "Gills", he uses the moniker of gremlin to tear apart airplanes while in the air and on the ground. Never serious, he would much rather be having fun than ever have to "grow up."