Rigor would most likely easily beat every Challenger in Dragonball Multiverse. Even if Gast has some cool Trump Cards and even if Vegetto is supposed to be stronger than Gogeta, Vegetto can't go SSJ4 in that Story ... ... well maybe that unknown Superbuu or that Magician could win, who teleported Vegetto into Defeat
Seeing some of your older artwork, brings up a question in my mind. Did you have any problems with 18s and Krillans relationship Malik? Did you think it was bland or something? Also when Rigor comes back to earth, how much of a zenkai boost will he have. P.S. love the updated artwork.