Forget Me Not: Art Against Alzheimer's, run by Mr. Brandon Tokunaga. (Ibuki for the first pic; Cammy and Chun Li for the second. An unfinished first pass of the Ibuki illustration can be found here.)
All proceeds were donated to Alzheimer's research as well as Alzheimer's care and assistance. That said, the theme for the art has been increasingly pop related, esp. with vintage video games taking a lion's share of the print submissions. Given that the show made a good chunk of change this year, I'd say that's a winning strategy, and for a good cause.