Signote

Signote is a recurring guide character who will appear throughout the Prismverse Saga. In-game, his main role is to give the player tips and guidance in the form of a signpost. He is one of the main characters of Super Mario and the Star Prisms.

In Super Mario and the Star Prisms
Signote is one of the primary characters in this episode. One of the main goals in the episode is to recover his final memory by collecting the eight Star Prisms.

Spoilers ahead: