XK9B is a planet in Sparks Nevada, Marshal on Mars.
After Jib Janeen captured and froze both Cactoid Jim and Antoinette Fontaine in carbonite, he sold them to aliens who were from planet XK9B. From there, Jim was used as a coffee table for awhile before being sold to representatives for Chesh Glutterfane. It is unknown whether Fontaine is still on XK9B or not.