From the official announcement:

Please vote for "Robot Stories" director Greg Pak’s latest comic book creation, “Mastermind Excello,” in the poll at Marvel.com. If “Mastermind Excello” wins, Marvel Comics will commission a miniseries based on the character!

“Mastermind Excello” tells the story of Amadeus Cho, a genius teen on the run from a nefarious government agency. TheFourthRail.com calls it “the shining star” of the “Amazing Fantasy” comic book in which it appeared this week. Four preview pages can be viewed online at Mile High Comics.