I can now rank up my third 5 star to rank 4. the decent options I have are either Hyperion or Omega Red. Note that I already have a maxed out duped 4 star Hype.
Who to rank up? 7 votes
Omega Red 5 star, unduped. Rank 3 -> Rank 4
Hyperion 5 star, unduped. Rank 3 -> Rank 4