M'ndarrel

The M'ndarrel are an alien species originally believed to have been extinct.

Physiology
They are a dioecious humanoid species, meaning they have both males and females. This species also possesses elongated heads and two mouth feelers.

History
The Collector abducted one when he displayed his collection to the civilizations of the galaxy.

Source
Guardians of-the Galaxy: Mission Breakout 001 (2017)