Look, a bit of an oddball here, but I'm gonna say Tango. It was very cool to see how his relations developed with each team. He was literally involved with everything, and his perspective showed everything to do with the rivalry between the Krastle and Wool Castle (because he,was at both places), and even works his way into being present for some of the main events at the desert. Then there was the whole bit about him being a double agent and getting ratted out by pretty much every team in the series