valoohcs:

I think it’s safe to assume that these panels show us both Gentle’s and La Brava’s Quirk.

I think the one that works with smoke is La Brava’s, considering the hearts on her outfit that match the smoke. We can only speculate about its exact effects, but the visuals in the second picture and how every hero seems out of commission is enough to know that it’s dangerous.

By elimination, Gentle’s Quirk would be this “super jump” Quirk. It’s interesting to note that

he apparently needs to touch the floor to use it. Also, he can take someone with him, so it might be more complicated than a simple jump. Though it wouldn’t surprise me if he could only teleport from/to places directly exposed to the sky.