The Invincible man: Comic Book Resources talks with Robert Kirkman about Invincible:

"When it gets down to it all what I'm really doing is seeing where people in the past have zigged and zagging instead. I'm trying to keep things fresh. If it's been done before, I'm not going to do that. I'm trying to make this book interesting, not a regurgitation of all the comics I've enjoyed as a kid. Whether or not I'm succeeding is anyone's guess but I'm certainly trying. It's really as simple as reading a comic and going, 'man, it would've been cooler if they did this instead' and then throwing that in the comic. Of course... that could just be considered regurgitation comics I enjoyed as a kid. Hell, I don't know what I'm doing."