Rash (Dave Shar) is the "cool cat" of the 'Toads. He is an extrovert and a show-off and loves to crack puns. Rash is the smallest but the fastest and most agile of the 'Toads. He always wears his trademark sunglasses and spiked black kneepads. In early artwork he was presented wearing red armbands, but these armbands were never visible in any of the games, and by Battletoads/Double Dragon the armbands had been eliminated entirely, though they were restored in his Killer Instinct appearance. His profile in Battletoads Arcade reveals his height to be 6' 3". Rash's skin has changed in appearance once at the beginning of the series. He began with a medium shade of green, just like the other two 'Toads, and appears that way on the original game's box art for the NES (with dark spots in the Sega Genesis version). In every game he appears in, his skin is a bright green. In the 2020 reboot, Rash is depicted as the most self-important member of the team, seeking fame and recognition for their heroics.
Rash has appeared in every Battletoads game, though not always as a playable character. He was player one's character in the original Battletoads game but was out of action in Battletoads for the Game Boy due to being kidnapped prior to the game's opening. He returned to action as player two's character in Battletoads in Battlemaniacs and continued on as a playable character in Battletoads/Double Dragon and Battletoads Arcade.
Source: Wikipedia, "[en.wikipedia.org/wiki/Battletoads_%28characters%29%23Rash Battletoads (characters)]", available under the CC-BY-SA License.