The Sanrio stable of cute mascot characters has ... Reiko Natsume x Bad Badtz-Maru and Nyanko-sensei x Hangyodon, most of whom are shown fawning over one another in some way.

The first formal reveals on July 12, 2024, showed Pochacco with a Zinogre costume and Hangyodon with a Lagiacrus ... do not necessarily mean that the Sanrio characters would appear in Monster ...

Sanrio is collaborating with Welcome to Demon ... Asmodeus with My Melody, Clara with Hangyodon, Kalego with Bad Badtz-Maru, Opera with Hello Kitty, Jazz with Kuromi, and Lead with Pompompurin.