测验你能从他们的脚上说出超级粉碎兄弟终极战士的名字吗？

Pikachu
Pichu
Jigglypuff
Kirby

The answer is Pikachu.
This little yellow shoe belongs to Pikachu. It's a little bit of a cheat, as Pikachu's feet are never actually seen in Smash Ultimate, but we're assuming it's him anyway.