The biography of Hazbiga Rax has to take two parts; one for each bra cup. The silicone "Rax" which is around 300 years old and has had a number of injections over the years to keep soft and supple, and that of the humanoid Thrill woman, Hazbiga. The silicone has a colorful history, having been touched by no less than seven other hands including a mouth. The host before Hazbiga was Curseno Rax, a not-so great mother figure of Binjamin Disko in his youth.
Hazbiga Rax was a very, very, attractive and big uh, eyed young woman, who didn't have to work very hard to get laid for the Thrill joining program. She was thrown out of the program after a poor report from Curseno Rax during the initiate assessment, because of mammoral jealousy. She was then reinserted into the program because of unprecedented size, and finally became the host to Rax when Curseno Rax dried up.