Through the years up until 1994, stray particles of Biollante's DNA would become lost in space, eventually going through a complex process of galactic mutation, resulting in the creation of one of Godzilla's toughest foes, Spacegodzilla. There has been controversy over who the true carrier of the DNA was, with Mothra being the other possible candidate. The Mothra variation concludes that minute amounts of exterior genetic material from Godzilla collected on Mothra's body during their great battle. When Mothra ascended into space (as Biollante did), some or all of the DNA remnants drifted off of Mothra's body. It entered a black hole, where it came together with a crystalline structure or organism, then exited out a white hole. It was then exposed to the tremendous energy of exploding stars, resulting in Spacegodzilla. However, it is more likely that the carrier was Biollante, as Spacegodzilla sported Biollante's characteristic tusks, which could not be inherited from Godzilla as that feature is not present anywhere on Godzilla's body. In addition, just as Biollante had done upon her defeat in 1989, Spacegodzilla had dematerialized into particles of energy and ascended skyward.
She appears in GKB: Match 2 - Koji vs. Biollante.