Start A Cult Day!
Call it "Children Of Gil," and tell the story about a guy named Gil Patterson who once got so high he thought his name was Patterson Gil, so he went to city hall and changed his name. When he came down from his high, he didn't understand why the various applications he would submit over the years were constantly being denied as invalid. Finally, he returned to city hall and saw that he had changed his name that day years prior when he got high enough to successfully traverse bureaucratic red tape while retaining no memory of having done so. Gil Patterson, now Patterson Gil, decided that he had been kidnapped by aliens who outfitted him with a new consciousness, pulling his essence from deep inside and posing that as his outward beingness. Patterson Gil then went about the earth living his new life according to how the aliens had redesigned him. His goal was to effect change upon the globe before the aliens came for him. You should tell people that Patterson Gil did not die in 1981. He was come for.
No one will join your cult since you make it clear that the cult's origins can be traced back to a drug-induced blackout experienced by the leader.
Happy Start A Cult Day!