Proto was a major character in Krazy Dudez, & the main antagonist in season 3 & 4 of Mr. Cringe. He originally appeared after being built by Flaky to oversee Mr. Cringe in his journey to the 5th alternate universe, but malfunctioned & ended up turning evil. Mr cringe then burned him & returned, which prompted him to come to his universe for one final battle, in which Mr. Cringe won by attaching him to a magnet. He then hired 2D as a hitman to try to kill him in S4E1, but he failed & Proto then continued to torment Mr Cringe & Flaky all throuought season 4, until he was finally defeated & burned alive alongside his Jewish sidekick.