Folth

Folth (フォルス Forusu) is the Summon Familiar (使い魔の召喚, Tsukaima no Shōkan) of Kirito Kazehaya and the overall deuteragonist of the Tales of Summoners series. A Sylph Faerie who is said, prior to contracting with Kirito, to be quite the troublemaker; often stealing other people's belongings or pulling off pranks in Regios which earn him the alias "The Red Trickster" (赤いトリックスター, Akai Torikkusutā), something he doesn't seem to deny. Coming from the Sylph race, Folth, like all other Sylphs, has the ability to manipulate air around him and he is noted to be one of the few Sylph Faeries who has a perfect mastery in it.

Folth, in contrast to his contractor, is rather rude towards other people he doesn't like; often being suspicious and annoys them to the extent, much to Kirito's dismay. However, he shows a rather soft spot for his young Contractor, who he treats as a little brother and doted him much like his adoptive family and often warry of his friends taking a liking to him which also causing him to be quite protective.