Taken straight from Battle Bots Wiki

Son of Whyachi was a competitor on BattleBots built by Team Whyachi as a lighter version of their superheavyweight robot Whyachi. It originally competed in Season 3.0 as a heavyweight, where it claimed the championship. However, after new rules decided that its unique drive system (a set of "feet" that "shuffled" along the ground) did not constitute the weight bonus given to walkers, it moved to the superheavyweight division. Unfortunately, it never relived its Season 3.0 success, losing early in both Seasons 4.0 and 5.0. It also had a lightweight version called YU812 which competed in the final two seasons. Son of Whyachi returned for the NPC Charity Open as Nitro SOW.

"a set of "feet" that "shuffled" along the ground" Slam Dunk!!