Imma just drop his story here ok??!?!?,,,,,
In his AU Eclipsa Eclipsa n her fam are the royality, Star is ..well nobody??,, She just got married w Rhombulous.
Due Star being supportative to Eclipsas family and monsters in general she and Romb use to fight a lot all the time and that effects badly on their small son, once Romb just crystalizes her when Cyros is 12 years old. He never actually was there for his son, mostly bonding w MHC and Star was rising him almost alone all time.
So when she gets crystalized Cyros is now on his own and alone all the time, he runaways from Romb and joins the IS 👏