The only major difference being that his dad is the most powerful superhero on the planet! And, Mark seems to be inheriting his father's powers! See Mark thwart super-villains, alien invasions and all sorts of craziness, as he gets the hang of all this super-heroing stuff.

    Horrible's Sing-Along Blog, this collection of stories written by Zack Whedon (Deadwood, Fringe) chronicles some of the earliest adventures in the lives of archenemies Captain Hammer and Dr. Horrible.This anthology solves many unanswered questions left over from the show. For instance: What event inspired Dr. Horrible to become the world's greatest criminal mastermind? Why is Penny, the beautiful girl from the Laundromat, still single? How can you, the reader, be like blustering do-gooder Captain Hammer? And why is Horrible's sidekick, Moist, so . . . um . . . well, you'll find out!* Collects the first issue of Dr. Horrible with all three digital comics from MySpace Dark Horse Presents.* Includes a never-before-seen sixteen-page story, about the top secret organization The Evil League of Evil.