As red he was known
but it was as guardian that the tells were sown
And so the guardian did slay the hunters both man and beast
Yet the good did devour
Til death brought it's own surcease
Carcharoth
Answer may also be Red Maw, the translation of his name
Carcharoth was bred from the foul breed of Draugluin, the first Werewolf, and fed with elvish and mannish flesh by Morgoth himself.
NOTE: Answer was mispelled as 'Carchoroth'. If the proper spelling fails, please try this incorrect version.
Tolkien Gateway: Carcharoth