Not sure if that's what you call them, but it's what I'm looking for. Anyone have a list (or can list for me) the opponents you have to beat X times to unlock a 2nd challenger or earn a summoning item for another challenger? I now there's a few of them but I've lost track of who they are (and who they unlock). Any help is greatly appreciated.

Beat Forj Matriarch, the Dormant 70 times to unlock Forj Matriarch Rekindled. Beat Forj Matriarch Rekindled 70 times to unlock Forj Matriarch, the Erupting. Beat Eventide Phoenix 25 times to unlock Mornrise Serpent. Beat Fruit Punch 25 times to unlock Fruit Salad. Beat Fuyaira 25 times to unlock Odontos. Beat Decidiwi 25 times to unlock Deadroot. Beat Meatslab, the Resting 10 times to unlock Meatslab, the Awakened. Beat Meatslab, the Awakened 10 times to unlock Meatslab, the Furious.

I think that's all of them?

Edit: No wait, beat the Mad Scientist 10 times to unlock Mutant Scientist.

ah TY so much!