femto (berserk)
In Berserk, Femto is the fifth and newest member of the God Hand. He appears as a sinister black figure (blood-red in the anime series) with a large batlike cloak that he can convert into wings, clawed feet much like a bird of prey, and a sinister hawk-like hood.
Out of all of the demons of the entire Berserk universe, it is Femto who has earned Guts' fiercest and undying hatred, fueled both by the circumstances of Femto's birth and by his actions during the Eclipse.
Femto is none other than Griffith, who sacrificed his entire army, the Band of the Hawk, during the Eclipse in order to become a God Hand.
This tag implicates griffith_(berserk) (learn more).