The Pierson's Puppeters are the more original of the races in the Ringworld series and in many ways the part that makes the story interesting. A philosophy that both makes sense and is very different. They also look very different and these images are a few interpertations of the way that the Pierson's Puppeters look.
I find this one entertaining beacuse I can't think of a race less suitable to be a green lantern. After all to be a green lantern you have to be fearless and that is simply not the puppeters. I'm also not really sure how they would wear a ring, but that's a differnt point.