Katia Geizer, popularly known as Geizer or Gaiser, is a former Russian pornstar born on December 1, 1990, in Russia. She entered the adult industry in 2011 at around age 21 and remained active until 2020, appearing in over 20 films primarily focused on hardcore anal content, including double penetrations, A2M, creampies, and facials. Studios like LegalPorno, Evil Angel, and TeenMegaWorld featured her in titles such as 'Anal Training of Geizer' and 'Legal Porno GG392.'
Boasting a slim, petite physique at 5'7" (170 cm) tall, 99 lbs (45 kg), with 34B-24-34 measurements and natural breasts, she had brown/auburn hair, hazel/brown eyes, and a shaved Brazilian pubic style—no tattoos or piercings. Her innocent teen-like looks contrasted her bisexual enthusiasm for solo, girl/girl, boy/girl, and gangbang scenes. Fans rave about her 'elastic' asshole and demonic performance intensity, mourning her early retirement.