I really like this guy; he grasped my attention as soon as I saw him. I love how his personality mimics a wasp: how he's always in motion and always wants to be around people, even if what he does to get their attention isn't nice. His design is lovely, too: I love insect-like characters and robots anyway, but you've married the two into a very elegant and unique look (even if the prospective buyers didn't think so!).
I also really love the hints at his relationship to the robot gang, and how he may have become bitter to the buyers who rejected him, but his affection for Edward prevents him from having the same hatred towards humans that the other robots do. It's interesting that you say he's afraid of what would happen if the others found out, and I wonder what would happen if they did...
Overall he's a very interesting fellow, and it was really neat to see a new addition to your gang. :)
Wasp's Comments