kliff undersn
Old man from Guilty Gear who was a war hero during the Crusades and was formerly the leader of the Sacred Order of Holy Knights before retiring and passing on said role to Ky Kiske.
Although he is an old man, he can also de-age back to his younger self during his attacks.
He wields a huge sword called the Dragonslayer. His son is a boy who became the Gear known as Testament.