Victoria, Distinguished Bi...
... with a henchcat on the side.
Mexico 2013: I think the Victoria is Lisette Garzón covering the role? though she was one of the two first-cast Demeters, and that would be an unusual cover situation in a replica production.
She posted the second photo with the caption "Evil/good union..." but the makeup and unitard don't match any cats I knew for the production, not even the named swings like Quaxo and Admetus - although I was sure I'd glimpsed that dramatic red splash in some backstage footage somewhere...
After a bit of scouting around, though, I realised we had two characters unaccounted for and unphotographed: the actors, two brothers by the names of Joel and Natan Fridman, are credited only as 'acrobats'. And one of them has an instagram account, with a single photo from Cats on it:
Putting together the red slashes/rib markings on the unitards, the unusual makeup, and the 'evil/good' comment from Lisette, I think we can definitely say they were henchcats - though they might have also participated in the rest of the show in some capacity. Time to go back and comb through footage again!
Natan is on the left and Joel on the right, and I think it's Joel in the photo with Victoria. Mistoffelees is Orville Alvarado, and I think Munkustrap is Marco Salazar.
(Sources X X X)
(Mexico 2013 rare characters masterpost.)