Zitz (Morgan Ziegler) is the leader of the 'Toads. He is a tactical genius and an economical fighter, preferring fighting methods that allow him to conserve his strength. Zitz has a larger build and is slightly taller than Rash, and is the smartest of the three. He is always seen wearing black gauntlets (the arcade Battletoads revealed his gauntlets to contain video communication hardware), spiked black kneepads and a black belt with the 'Toads' insignia on the buckle. According to his profile in the arcade Battletoads, he stands at a height of 6' 8". Zitz's skin has changed in appearance several times over the course of the series. He began with a medium shade of green, just like the other two 'Toads, and appears that way on the original box art. In the first game itself his skin was actually tan to tell him apart from Player 1 (Rash). His skin was later changed to a lighter green with hints of yellow (he appeared to be an olive green in Battletoads in Battlemaniacs), before he was finally presented with a cool bluish-green color for his skin in Battletoads/Double Dragon and Battletoads Arcade. In the 2020 reboot, Zitz acts as the leader and brains of the team, though this causes him to suffer from a superiority complex as a result.
Zitz has appeared in every Battletoads game, though not always as a playable character. He was player two's character in the original Battletoads game and took on the Dark Queen's army solo in Battletoads for the Game Boy. Due to a surprise ambush he was knocked unconscious and taken prisoner just prior to the beginning of Battletoads in Battlemaniacs and thus was not playable in that game. He returned to action in Battletoads/Double Dragon and Battletoads Arcade and is immediately selectable in both games.
Source: Wikipedia, "[en.wikipedia.org/wiki/Battletoads_%28characters%29%23Zitz Battletoads (characters)]", available under the CC-BY-SA License.