Roblox The Mimic: How to Get Hiachi Grin Mask [Full Guide]

Roblox players can unlock the exclusive Hiachi Grin Mask in The Mimic during The Hollow event by conquering seven carnival mini-games, submitting a ritual wish, and defeating the terrifying boss Dimitra before the limited-time Halloween celebration concludes on November 15, 2026. According to verified reports from Sportskeeda Esports & BGMI, the platform-wide Hollow event went live on October 22, 2026, bringing exclusive User-Generated Content (UGC) rewards and badges across flagship experiences. Within The Mimic's dedicated event hub, players navigate a grim carnival grounds where precision, spatial awareness, and audio tracking dictate survival. Each completed sideshow grants festival tokens required to trigger the central altar mechanism. Once all seven trials are cleared, players summon Dimitra, navigating narrow corridors to avoid lethal jumpscares. Gamers optimizing performance on mobile devices during intense chase sequences should note compatibility updates, similar to the [Samsung One UI 9 Update: Bugs, Fixes & Gaming Impact [Confirmed]](/news/samsung-one-ui-9-bugs-update) affecting framerates in demanding 3D environments. Finishing the encounter immediately grants the coveted Hiachi Grin Mask directly into the user's Roblox inventory alongside a rare commemorative event badge.