Used this for a special needs class a while back- it was fun...
http://www.garfield.com/fungames/comiccreator.html (http://www.garfield.com/fungames/comiccreator.html)
here's one I made earler...
(http://i63.photobucket.com/albums/h134/Dog_Deever/Garfield_zps8cf7c78e.jpg)
I know Marvel has quite a sophisticated one of these, It would be great to have a 2k one
I'm sure it could be done, but there might be copyright probs, better sticking to text on the Comic Con pics