Honestly this is one of my last hopes to find this otherwise unknown thing i saw on a tv once. (that was a joke)
But yeah, as i recall it, it had yellowish skin looking sickly/tainted and fingers that looked covered in a tar-like substance. It looks very humanoid with long ears, bug-like wings that looked withered at the end, and large eyes. It also had sharp needle-like teeth in it's mouth but that's all i could recall from said creature. (i had drawn a sketch but cannot post it.)
Also one thing i recall is in said show/movie, the creature plunged it's arm into a man's throat to remove a lung or another organ and eat it whilst in a tree. From memory, the character that was killed this way had a square-ish head and grey hair, I think he was the father or else from another character and had offered himself to the creature ..? can't recall why tho.