Running Side Kick (ドラゴンスラッシュ, Doragon Surasshu^?, "Dragon Slash") is an attack possessed by Marshall Law from the first Tekken game onwards, and Forest Law in Tekken 3 and Tekken Tag Tournament. Bruce Irvin also has this move from Tekken 2 onwards, where it is called the Sniper Slash. The move's original animation was similar to the Leaping Sidekick, but Marshall's version was reanimated in Tekken 6 and was also given to Forest in Tekken Tag Tournament 2 while Bruce kept the original animation.

Marshall's reanimated version can transition directly into a Supercharger on hit, but this trait would not be present in Tekken 8.