Agony is a fierce, aggressive, and unstable symbiote driven by a desire for survival, control, and lethal force while living in the body of her host. A mercenary named Leslie Gesneria. while she operated out of the life foundation headquarters in San Francisco, California. The Agony symbiote covers its host with dark purple biomass mixed with dark pink. and when it covers its hosts it boosts its natural abilities to a superhuman level. Possibly due to Earth's environment, it has the ability to manipulate its biomass in a variety of ways. It also gives its hosts Superhuman Strength, Muscle Mass Enhancement, Superhuman Durability, Superhuman Stamina, Accelerated Healing Factor, Wallcrawling, ESP (Spider-Sense), Immunity to Spider-Man's Spider Sense, Webbing Generation and Web-Slinging, Camouflage, Constituent-Matter Generation, Acid Generation, Metabolic Chemical Absorption, Trichokinesis, and can talk to its host in their heads because the symbiote lives inside of its host. But it has a weakness to fire and loud sounds. But when Leslie Gesneria is in control of her own body and agony stays dormant she is an athletic woman with no superhuman powers. Agony was born when scientists at the Life Foundation kidnapped Eddie brock and forcibly extracted five seed samples from the Venom symbiote. Agony—was too young and immature to bond on its own. So The scientists forcefully and artificially fused it with Leslie Gesneria who was a mercenary and security officer hired by the life foundation. to turn her into a superhuman guardian Agony speaks the native language of her host—primarily English—as well as the telepathic/linguistic dialect shared among Symbiotes. And Leslie speaks English. Agony is the fifth born child of venom after forcefully being created from his symbiote. Alongside her older symbiote siblings carnage (bonded to Cletus Cassidy), scream (bonded to Donna Diego), lasher (bonded to Ramon Hernandez), and phage (bonded to Carl Mach). And her younger symbiote sibling named riot (bonded to Trevor Cole). Shes also the auntie of her brother carnages symbiote children Toxin (bonded to Dylan Brock son of Eddie brock), scorn (bonded to Tanis Nieves), and Raze (bonded to Claire Dixon). She has als also briefly bonded to Scott Washington, James Murphy, Gemma Shin, Deadpool, and Teddy payne (female). Leslie Gesneria is a young adult woman and agony has no age. 5 feet 10 inches tall and Weighs 130 lbs (59 kg) but when agony takes over her height and weight can increase or decrease. Leslie Gesneria has long, straight-to-wavy black hair and agony has Extremely long, wild, and flowing purple prehensile tendrils. Leslie Gesneria has Brown eyes. and has a light/fair skin/complexion. With an athletic, slender, and toned body type. And speaks with a sinister, chaotic, and aggressive tone of voice. It blends Leslie Gesneria's disciplined, serious, and security officer tone with the overlapping, distorted, and predatory hiss of the Agony symbiote. Leslie Gesneria usually wears a red tube top featuring intersecting black lines across the front. Vivid pink jeans secured around the waist with a thick black belt. And Simple black casual shoes or boots. But when agony takes over her body. She covers Leslie in Primarily dark purple blended with dark pink highlighted biomass. Distinctive long, hair-like tendrils, sharp fangs, and glowing or white-lidded eyes. And Retractable claws, forearm blade extensions, and organic tendrils shaped from the symbiote mass.