berserker (fate/zero)
Fate/Zero character.
A towering man clad in black-bluish full plate armor, wearing a plumed helmet that conceals his face. Sometimes he's depicted with his helmet off, with long black hair and a gaunt face.
True Name: Lancelot. He also has a Fate/Grand Order incarnation where he fights under the Saber designation.
For tagging purposes, only also tag Lancelot (Fate/Zero) if it's clearly his original appearance in the Berserker armor or both appear in the image. Not all helmetless depictions of Berserker are his original version. Some of the differences between the two can be seen in Danbooru asset #23661650.
Not to be mistaken with Heracles.