Testament is a significant character in the Guilty Gear series, known for their gothic appearance and tragic backstory. Originally a human and servant to the Gear Justice, Testament was transformed into a Gear and forced to fight against humanity. After being freed from control, Testament seeks redemption and aims to protect those who cannot protect themselves. Testament is recognized for their unique fighting style, use of scythe-based attacks, and their complex, morally ambiguous role throughout the series.