Capcom have published a blog post detailing some of the alternate colours for Albert Wesker and Crimson Viper in Ultimate Marvel vs. Capcom 3. Wesker’s alternate outfits seemingly draw inspiration from a bunch of other Marvel and Capcom characters:
Crimson Viper is no different. Some of her costume inspirations came from Claire Redfield and…Michael Jackson. You can read more over at the blog post on Capcom’s community hub, linked to above.