4* Trash Tier: The Nasty Nine

Here I am, down to having only nine 4*’s left to champ that are fully covered (still missing covers for the 3 latest, but otherwise, this is the end of the classic 4* champing journey). So I figured, why not solicit opinions from the community on who is the least bad of the worst characters. In other words: who should get my ISO next?
in alphabetical order and shown with the current configuration and number of saved covers in case it influences your advice. All are sitting at level 209:
in alphabetical order and shown with the current configuration and number of saved covers in case it influences your advice. All are sitting at level 209:
4* Trash Tier: The Nasty Nine 9 votes
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1. Mysterio 4/4/5 +4
6. Talos 5/3/5 +2
7. Emma Frost 5/4/4 +20
8. Spider-Ham 5/3/5 +3
9. Devil Dinosaur 5/5/3 +32
The reasons for going with Mysterio is that he has a passive 2-turn random stun and the ability to convert 5 blue ap to 5 yellow ap. I find that yellow tiles seem to be uncommon.
As for teammates, he works really well with IM40 and Shuri. Matching away those fortified traps and tiles will see you chomping away at opponents' HP.
He might work well with Bishop and it will be even better if opponent had cascades. You will be on your way to stun 2 opponents once your turn begins.
His passive stun is great when you are dealing with Peggy. It's 1/3 chance but when it stuns her, it can be a saving grace.
I like the idea of Mysterio - he seems like a good play-down buddy for Okoye to me, but mine is unchampable so I can't really know for sure.
Otherwise, just do the next one that gets featured in some way.
So far, I champed:
The Thing (I had been wanting to try him on a few defensive team combos)
In addition to my other champables, I also picked up a few more for new ones. Updated champable list:
Human Torch 3/5/5 +5
Spider-Man 2099 5/4/4 +3