MegatRON, the team's Featherweight on which UltRON is based.
UltRON was a Heavyweight robot built by G3 Robotics. It is a larger version of the teams Featherweight, MegatRON, which means that was a two-wheeled, dustpan-style robot armed with a articulated sawblade arm. UltRON was ultimately slated to debut in RoboGames 2018. However it dropped out, and was replaced by Yin yang which had bypassed the waitlist entirely.
Outside RoboGames[]
The idea for UltRON would later be reused for G3 Robotics BattleBots entry Sawblaze which would go on to enjoy a great deal of success.