testament_(guilty_gear)
Free-willed Gear from Guilty Gear who was originally a human child and changed into the way they are today by the Post-War Administration Bureau.
In Guilty Gear, they plotted to revive Justice (guilty gear). In Guilty Gear X, they dedicated themselves to protecting Dizzy (Guilty Gear). They were adopted by Kliff Undersn.
They fight using a scythe made of blood along with their unnatural Gear powers.
Testament is non-binary according to their official bio as of Guilty Gear Strive, with prior depictions leaning masculine.
They have succubus familiars at their command.