Species: Nark'narh (Made this up...)
Sex: Doesn't seem to be definite in creature form but Karash seems to refer to himself in 'human' form as a male; maybe just out of convenience. It's guessed he's most probably closest to a human hermaphrodite.
Sexuality; Karash doesn't really understand this human concept, seeing as their race doesn't have any real definitive separate sexes.
Appitite; Nark'narh's are actually vegetarian. Unfortunately the vegetation on their planet actually fights back, causing them to almost be predator like in their structure.
Apperance:
[Humanoid]
[Transformed]
[Old picture]
Karash doesn't know much about Earth and humans. He was sent as a scout to learn more about it for his people.
If in the spaceship hotel setting, he's most probably the captain.
His uniform;

Though not completely correct, that's the basic idea (some colours are a bit off)