Against Pandora I tried going with Misaki and 2nd time with Yan Lo - unfortunately Misery did a short work with me. The opponent keeps them bunched up together not only to amplify Misery, but also possibly mitigate damage on to Pandora or Iggy if I try killing Sorrows so Snipers or Archers are not best suited for job. Basically he plays Pandora only so far and kind of specializes in control over the field. I was thinking that blasts would help but at the same time he usually picks Box Opens upgrade. So that would be a job for Kang to keep ranged stuff in the bubble or go with him to the party in to the melee.
Sensei Yu sound like the one who could mimic stalking from Misaki - the downside of him is lack of charge, but stalking could possibly help that. Would need to find a proxy for him and something popped into my head about that....
In regards to Masters just bought Mei Feng, also have Lynch, Yan Lo and Misaki...
EDIT. In terms of non master stuff I have Snipers, Samurais, Izamu and Dawn Serpent...