Even a Man who is Pure at Heart, and Says His Prayers by Night...

May become a wolf when the wolfsbane blooms, and the Autumn moon is bright.

Or, failing that, can be the Vicar of VHS:

Naschy rises from the breath of Chaney: or, Night of the Wolf Mans

Greyscale half-sleeve by Ryan Cook, Lucky Bella Tattoos, Maumelle, Arkansas.