Zerg in star wars
The Queen of blades and a small portion of the zerg swarm are transported to the star wars universe. The swarm evolves to adapt to the new universe and kerrigan gains a new instinct to breed. At some point she captures obi wan and finds something about him appealing so infects him turning him into her consort and general of the swarm.
Another take on this idea..... Kerrigan sends a single drone through a dimensional portal it carries not only the genetic codes for the entire swarm but psychic copies of Kerrigan, and abenthur. The drone is weakened by the dimensional shift and is slowly dying. In order for the zerg to live it must infest another being and transfer the psyonic copies. The planet it arrived on was Naboo during the droid invasion and it stumbled upon a Jedi. The drone used the last of its life to bite the Jedi injecting a concentrated dose of the hyper evolution virus and the minds of Kerrigan and abenthur. The minds of these two are semi aware and begin to subtly alter the Jedi in mind and body all the while watching or suitable hosts to take over. It's on genosis that abenthur finds an adequate host in count dooku. The zerg geneticist expels himself from The imprisoned Jedi as a small larvae like slug and some how gets into dooku. The genosians are swiftly infested the Jedi leaves the planet and has it placed under quarantine not to prevent the new zerg Swarm from spreading but to allow it to establish stable base strains before moving on to other planets and systems. Kerrigan finds her new body in the duchess santine and the planet mandalor soon falls to the swarm.