Looking images at Deviantart I found a Baby Jack! I ´m a big fan of Tim Burton and I really like the image. It ´s very detailed and it´s a different way to draw Jack. Well, the artist, Ruben Martinez, has made more baby characters images with comic heroes, what I find very creative. I ´m not a big comic fan but thoses are very fun images. And he has made good images of grown up heroes too.
Check out his Deviantart.