Sol Badguy

Sol Badguy is the well-known alias of Frederick Bulsara, the iconic protagonist of Arc System Works' Guilty Gear series, and is the long-time rival of Ky Kiske. Originally a mere scientist, he ended up being involved in the creation a weaponized-species known as the Gears that caused an unintentional crisis, and as a result lost his lover Aria Hale to the transformation of the leader of the Gears known as Justice; meanwhile, Frederick himself ended up as the very first prototype Gear. It was stated that another close friend of his originally known as "That Man" was also behind the crisis, which resulted in Sol hating him ever since.

As a result, as he carved out his new identity as a bounty hunter that went off killing Gears of his own accord and atonement as the Crusades between humans and Gears had been raging on, he was at some point enlisted into the Holy Order before quitting and earning the animosity of Ky Kiske. Even then he has dedicated himself with years of guilt and forming his gruff exterior hunting down Gears and "That Man" while remaining immortal to his titular moniker of "the Guilty Gear". Even then, as his long life transpires, he becomes more influenced by the world around him for the better to move on from his ruined past.

Despite him and Aria not being married as they were to be engaged, it is hinted that via Aria's transformation into Justice, they had unknowingly produced a supposed half-gear-half-human daughter named Dizzy.

Sol has appeared in a few crossovers beforehand; he is also known to be quite the Queen fan and is even modeled after their late lead singer, Freddie Mercury.

He has an alternate form known as Holy Order-Sol/Order-Sol, or literally Seikishidan Sol (聖騎士団ソル, Seikishidan Soru; lit. Holy Knights Order Sol), a version of him that is him from the distant past during the time he was enlisted in the Crusades, circa 2172 AD.