Mack with a shotgun axe!!!
Fitz, either holding tech or in any number of various outfits he's had over the series.
Simmons, also holding tech or something that would fit her.
Piper with a gun
Deke in any various outfits.
Enoch, with and without his face.
YoYo with prosthetic arms
Coulson from when he held up is prosthetic arm and had an energy shield.
Any number of other Inhumans, Gordon, Lash, Flint etc.
Deathlok
Sibyl
Ghost Rider/ alone or pop ride
Sousa
Sarge with pop ride truck!
Now for a couple spoilery ideas:
Ok, any other ideas? Who's got em? We desperately need more!! Please.