Mattel Action Figure promotional cards

Introduction
Every one of these promos was distributed as sealed in the box of a Mattel action figure. Every card was sealed in the box of the respective monster figure.
Promo Specifications
English Set Name: Mattel Action Figure Promotional Cards Set Prefixes: MF01, MF02, MF03 Card Galleries: MF01-EN - MF03-EN Card List: MF01-EN - MF03-EN