Step 1: Choose your Hero
Additionally, you'll want to consider the physical feature of your gnome. Is it standing? Sitting? Does it have distinct features that lend itself to a specific superhero? In the case of the three gnomes I have here, there were definite characteristics that led me to choose the heroes I did. From here forward, I'll describe the steps to create a Batman, Robin, and Spiderman gnome set. These techniques can be used to make any garden hero.
Batman and Robin: One gnome is in a proud, alert stance. The other is sitting with his head resting on his hands. This gnome pair struck me as a great duo. To me, the obvious choice was the classic Dynamic Duo of Batman and Robin. But I thought I'd change it up a bit and make the standing gnome be the Boy Wonder and the sitting gnome be the Dark Knight. I thought this was more unexpected.
Spiderman: I also had a crawling gnome. As I was holding it and positioning it in different orientations, I noticed that if I held it vertically it looked like it was crawling up a wall, and the knee area had a hole in it to use as a place from which to hang it. So to me Spiderman seemed like a no-brainer. I could position the gnome so that it looked like Spiderman clinging to a wall.