Fantastic Four & Power Pack #2

Stop! Read this! Have you seen these missing children? JACK POWER, brown hair, brown eyes, can expand his density into a cloudy mass or shrink down to a fraction of his size, also answers to "MASS MASTER." He is probably with FRANKLIN RICHARDS, blond hair, blue eyes, wearing a t-shirt with a "4" on it, also answers to "SON OF A GENIUS." They've run away from home together to make careers as solo heroes, and Power Pack has to track them down before KRAVEN THE HUNTER does!