Lisa Isaribi possesses distinctive light red hair styled with a knot falling into a ponytail and separate bangs, complemented by light burnt orange eyes. She stands 167 cm (5'6") tall and weighs 55 kg (121 lb). Initially appearing in a white crop top, dark jeans with the left leg cut off to reveal horizontal striped tattoos on her right thigh and upper left arm, a white tool belt with a skull buckle, and black shoes, she later adopted the Special Fire Force Company 8 orange jumpsuit worn open over a black crop top and black boots after joining. Orphaned when her parents died in an Infernal attack, Lisa developed a fear of fire. This fear vanished after exposure to an Adolla Bug activated her Third Generation Pyrokinetic abilities. Rescued and brainwashed by Dr. Giovanni of the Knights of the Ashen Flame, she was assigned the alias "Feeler" for an undercover mission. She infiltrated Vulcan Joseph's workshop by posing as a refugee, forming a familial bond with Vulcan and the teenager Yū while secretly searching for the "key to Amaterasu" on Giovanni's orders. Presenting herself as kind and loyal to Vulcan but antagonistic toward the Fire Force, her facade shattered during the Vulcan's Workshop arc. She revealed her betrayal by electrocuting Vulcan, knocking Yū unconscious with her powers, and demanding the Amaterasu key. Despite this ruthlessness, she showed genuine concern, hesitating when Vulcan urged her to escape with them. She ultimately stayed with Giovanni, her conflicted emotions hinting at internal struggle. Rejoining the Knights in the Netherworld arc, Lisa fought Vulcan and Company 8 Captain Akitaru Ōbi. When Vulcan declared he entered the Netherworld to rescue her, she faltered briefly before attacking. After Ōbi defeated her using Extinguishing Grenades, Vulcan caught her fall. She tearfully urged him to abandon her, but Giovanni intervened, threatening her life. During the confrontation, Vulcan and Ōbi faked the latter's death to distract Giovanni. After Giovanni discarded her, Vulcan carried her to safety, breaking Giovanni's psychological control but leaving her severely traumatized. Recovering at Company 8's headquarters, Lisa joined the brigade as a technician. Her personality shifted toward sarcastic and playful, though Giovanni-related trauma occasionally resurfaced. She grew fiercely loyal to Ōbi, crediting him with saving her from darkness, and participated in his rescue after his arrest by the Tokyo Army. Later, during the defense of Amaterasu, she confronted Giovanni again. Initially paralyzed by fear, she rejected his influence after Vulcan's encouragement and aided in his defeat. When Giovanni possessed Yū, Arthur Boyle freed him, enabling her emotional reunion with Yū. Her pyrokinetic ability generates octopus-like flame tentacles, primarily from surfaces or her waist. These tentacles possess magnetic properties, locking onto biological or mechanical magnetic fields for precision strikes or grapples, though strong external magnetic fields can disrupt the ability. Trivia notes include her self-proclaimed "crybaby" nature, fear of abandonment, hatred of Giovanni, hobbies like karaoke, and preferences for punk music, science, and marriage as a life goal. Her blood type is O, and her surname "Isaribi" means "fishing side".