As I noted before he survived getting written out of his own story when everybody else got evaporated. Somehow he ended up becoming a God like Shotaro, and could interact with the "real" world. He was also able to bring back Shotaro after Asmodeus finger snapped him through that same narrative power via a biography, and together they brought back all the Super Sentai and Kamen Riders. Asmodeus himself was powerful enough that he could fuse all those stories together with exception for Revice which didn't exist until Wacky Woohoo Birthday Man intervened. So, that would make at least 94 different universes that Asmodeus fused together? Asmodeus also had that same narrative control, was responsible for bringing Shotaro from the real world, and was able to recreate Journey to the West and the Tale of Eight Dogs. Saber was able to compete with Asmodeus, and hurt him even when he went kaiju.