I also got my first tattoos from Rollo (in a motel in Austin back in 1992), and he certainly made a big impression on me.
At Skull & Sword, Grime has a Rollo original on the wall; it's a cobra and skull he painted in 1979. It might just be the toughest shit I've ever seen. It has lots of the cool trick elements people are using now--heavy whip shading, snakes with no eyeballs, hits of bright green--and he did that back in 1979. When I saw it, I felt so sad that I didn't have room for it.