# Avengers: Doomsday film promotion in Japan > Developing situation record from CLSTR: https://clstr.news/situations/avengers-doomsday-film-promotion-in-japan > Updated: 2026-11-01T02:29:50.000Z. Sources: 4. Developments: 2. Promotional activities for the Marvel Studios film ‘Avengers: Doomsday’ have commenced in Japan ahead of its scheduled simultaneous release in Japan and the United States on December 18, 2026. On October 27, Koji Mukai of the group Snow Man was appointed as an ambassador for the film, joining actor Yuki Yamada. Mukai expressed interest in the character of Doctor Doom, the antagonist played by Robert Downey Jr. On November 1, Nobu of the comedy duo Chidori was also appointed as an ambassador during a promotional event in Kyobashi, Tokyo. During the ceremony, Nobu wore a costume portraying Doctor Doom and participated in the ‘53rd Nihonbashi Kyobashi Festival – Oedo Kassei Parade’ alongside a large Doctor Doom float. ## Claims - Nobu has been appointed as an Avengers ambassador. (reported by 3 sources) - “Avengers: Doomsday” is scheduled for simultaneous release in Japan and the US on December 18, 2026. (reported by 2 sources) - Nobu stated that 70 percent of his comedic analogies are based on the Avengers. (reported by 2 sources) - Nobu proposed a “Yoshimoto Avengers” team including members like Masatoshi Hamada and Kiyoshi Nishikawa. (reported by 2 sources) - A Doctor Doom float was displayed with a height of 4.5 meters and a length of 4.0 meters. (reported by 1 source) - The Doctor Doom float weighs approximately 1.5 tons. (reported by 1 source) ## Timeline ### 2026-11-01: Nobu appointed Avengers ambassador for Marvel film promotion Comedian Nobu of Chidori has been named an Avengers ambassador at a promotional event for “Avengers: Doomsday” in Tokyo, featuring a massive Doctor Doom float. 3 sources. https://clstr.news/cluster/nobu-appointed-avengers-ambassador-for-marvel-film-promotion ### 2026-10-27: Koji Mukai appointed Avengers ambassador for upcoming Marvel film Snow Man's Koji Mukai has been named an ambassador for Marvel's ‘Avengers: Doomsday’, set for a simultaneous Japan-US release on December 18, 2026. 2 sources. https://clstr.news/cluster/koji-mukai-appointed-avengers-ambassador-for-upcoming-marvel-film --- Cite as: Avengers: Doomsday film promotion in Japan. CLSTR, https://clstr.news/situations/avengers-doomsday-film-promotion-in-japan