A species of
polymorph encountered by the crew of the
Red Dwarf in the episode
Emohawk: Polymorph II. Like your typical run-of-the-mill polymorph, it can change shape into just about anything and it feasts on emotions. The only major difference is that emohawks are more docile and can be kept as pets. In their natural physical shape, they also aren't quite as ugly as the first polymorph the crew encountered.
The crew of Red Dwarf encountered the Emohawk when
Lister decided that instead of marrying the
Gelf chief's daughter in exchange for an oxygen recylcer, he would instead just "
leg it". The chief was notably upset and sent the emohawk after the crew.