For those curious, Liz is Etna's cutman and second. The trio outside the ring are staff from Etna's personal gym who contribute during matches from time to time. The taller white haired lady is Licks. The red head is Scalla. And the shorty with the big tuft of hair is Frill.
(They are tragically characters number 2 through 4 who do not get big name intros, with the first being everyone's favorite chapter 1 weirdo: Remy... or at least my favorite chapter 1 weirdo...)