Captain of Dogs (as Celegorm's hound)
Huan
Hounds of Valinor
The great hound of Valinor, given by Oromë to Celegorm and brought to Middle-earth in the exile of the Noldor. Fated to speak three times and to die only by the greatest wolf ever born, he forsook his master for Lúthien, overthrew Sauron on Tol Sirion, and died slaying Carcharoth in Doriath.
Valinor, then Nargothrond and Doriath