These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Ensemble Darkhorse: Psylocke. Not only did she reappear in Marvel Super Heroes (alongside Wolverine, Magneto, and Juggernaut), but she remains a top choice in fan polls for Marvel vs. Capcom 3, consistently placing in the Top 5. Being one of the high-tier characters in MvC2 as well as a useful Helper in MvC1 most likely helped.
Suspiciously Similar Song: Psylocke's theme has some hint of the I Love Lucy theme, while Magneto's has some touch of Thriller.