The success of Undertale, especially in Japan, afforded Fox the opportunity to visit Super Smash Bros. creator Masahiro Sakurai at his home, where they discussed the series and played Super Smash Bros. Ultimate against each other. Sans, a character from Undertale, was later included in Super Smash Bros. Ultimate as a Mii costume available through downloadable content, along with his instrumental composition "MEGALOVANIA", for which Fox provided a new arrangement.[25][26][27]