How about talking about the mad and greedy paleontologist which debuted in the episode "The Birth of Uran!".
He also appeared in "Guno's Adventure" (I personally don't like the adapted name of Gideon, because it's the name of a common bus company in Joinville where I lived, lol) where he tried to get a treasure from a sunken ship to work in his research, but he got a single part of that treasure confiscated by Reno.
It's pretty funny how he was determinated to survive all the odds to tell Dr. Ochanomizu a way to save Uran and defeat the pterosaur robot.
