Gong
The Panther Men are blue, horned people who live on Mongo. In appearance, they are very similar to the Dragon Men. ("The Tournaments of Mongo")
Other Adaptions[]
The 1996 Flash Gordon animated series featured a race known as the Pantheron, gray/grey-furred felinoid humanoids.
2013s graphic novel Flash Gordon: Zeitgeist by by Eric Trautmann features both, Lion Men, who are humanoid aliens with yellow, brown, or orange skin-tones, pointy ears, sharp teeth and some feline features such as wild manes and tails, as well as full fledged felinoid humanoids.