New publicity material for The Super Mario Galaxy Movie has reportedly revealed an unannounced character ahead of the film's release on 1 April 2026.

Coverage from Nintendo Life, corroborated by IGN, notes that a description on UK cinema operator Everyman's "Coming Soon" page contains plot detail that appears to identify a character not previously confirmed by the studio. Nintendo Life advised readers who wish to avoid spoilers to refrain from reading the listing.

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Everyman is listed as the source of the description, which was discovered while the film's listing was being monitored by outlets tracking early promotional material. The film adaptation of Super Mario Galaxy is scheduled to open in cinemas on 1 April 2026; official casting and character announcements remain the primary source for confirmation until studios comment publicly.

Reporting on the incident emphasises that early listings and third‑party descriptions can occasionally surface ahead of formal announcements, prompting fans and press to treat such details as unconfirmed until verified by the filmmakers or rights holders.