MultiMuse is a Discord roleplay ecosystem designed to help users create and manage character muses, play as them, and connect them with communities and roleplay partners. Its character proxies support custom avatars, triggers, and sharing, making it easier to write as different members of a cast. Profile cards let users present character details with banners, colors, quotes, and privacy controls. For collaborative scenes, MultiMuse offers smart message splitting that breaks long posts at paragraph boundaries, along with thread tracking to help participants follow turns and keep scenes moving.

The platform also includes Communities and Listings for finding servers where characters can interact and partners seeking roleplay; these features are described as rolling out on multimuse.app. MultiMuse provides documentation and a getting-started guide, including guidance for people who do not already use Tupperbox. An accompanying Obsidian plugin lets users post from Obsidian and manage their tracker. MultiMuse can also be paired with StageHand for scenes and dice, and BackDrop for world maps. The service is associated with BackStagePass Group.