Dillon's Rolling Western (universe)
From SmashWiki, the Super Smash Bros. wiki
The Dillon's Rolling Western universe (ザ・ローリング・ウエスタン, The Rolling Western) is a universe that is represented in the Super Smash Bros. series. It stars the titular character, Dillon, as he saves villages from the Grocks, golem-like monsters that have a love for eating livestock.
Dillon appears in Super Smash Bros. 4 as an Assist Trophy, but was first shown as a regular trophy during development.
Dillon's Rolling Western: The Last Ranger - A music piece that plays on the Pilotwings stage.