User blog comment:Xilinoc/Ch. 561 - THE VILLAN/@comment-3536902-20131216162500/@comment-5398287-20131216225056

MP is short for Mangapanda.

As for Mask, I actually kinda like him. He's that brand of over-the-top villain that we've been missing ever since Dordoni and Charlotte, plus he's got a Mexican theme in a German-themed race.