Rhodjervyk & Wrulfrethd (Rodger & Rhouff) are Lycans. both have grey fluffy fur color, mane, mohawk, wolves tails. and they are part of fictional wolves' species, rather than werewolf transformation. but Rodger is Vampire Werebat hybrid (and he can't roar nor howling like wolves but he can clicking, chirping, squeaking, hissing, screeching); while Rhouff is pure Lycan-Wolf (he can roar or howl). in addition, some features are also different as well as personality. Rhouff is fairly modern "furson" than Rodger, receiving modern trends influence from the internet and like to being described as "Furry" or "Furson" pronouns; while Rodger is quite conservative person than Rhouff, prefer to read books/novels more and dislike being described as "Furry" or "Furson", instead to described him as "Anthro", "Lycan", "Person". Both are okay to hear if you describe them as "cute" or "fluffy"

Sources and Credits
Bat V1 + Wolfv1 + Mane/Hair + gloves + Batv2's Costume by  petruz (with some model & texture modification)
TF2 cosmetics: Merc's Mohawk, Mantreads