MMZ2's boss fight vs.and MMZ3's fight againstcopy Xare the closest 2D games have gotten to rival fights like Dante vs. Vergil and Bayo vs. Jeanne.Omega Zero
It's kinda funny too, I remember feeling at the time of the series' run and with things like DMC1 & 3 coming out during its run, that the Zero games were kinda coming from that mold of frenetic combat action but dialed back because they wanted to deliver a good MM platforming experience versus going into the stylish action genre.
Then I saw all the concept art and things that were gone into in depth in the art in the perfect works book and it's like "are we sure these guys *only* wanted to make a GBA game/series?"