Yuuta Mochizuki (望月祐多), real name Manabu Matsukawa (松川学), nicknamed "Mocchi" (もっちー), born March 14, 1967, in Kanagawa, Japan, was the second actor to play Mamoru Chiba/Tuxedo Mask in the Sailor Moon musicals, among other major roles. His first performance was as Kunzite, in Sailor Moon - Gaiden Dark Kingdom Fukkatsu Hen, and he first played Mamoru in its revision. His last show was Last Dracul Saishuu Shou - Chou Wakusei Death Vulcan no Fuuin in 2001. Yuuta was also the action coach for the musicals from 1998 to 2001.
Yuuta was the second longest running overall performer in the musicals, and the longest running Tuxedo Mask. He is also known for acting in the film Kamen Rider J as Koji Segawa/Kamen Rider J and the TV series Kyouryuu Sentai Zyuranger (which was adapted in America as Mighty Morphin' Power Rangers) as Geki/TyrannoRanger.
He has retired from acting as of 2007.
- He is a practitioner of karate.
Yuuta performed as Kunzite in the following musical:
- Sailor Moon - Gaiden Dark Kingdom Fukkatsu Hen (Kaiteiban)
- Sailor Moon Super Spring Festival
- Sailor Moon S - Usagi Ai no Senshi e no Michi
- Sailor Moon S - Henshin - Super Senshi e no Michi
- Sailor Moon S - Henshin - Super Senshi e no Michi (Kaiteiban)
- Sailor Moon SuperS - Yume Senshi - Ai - Eien ni...
- Sailor Moon SuperS - (Kaiteiban) Yume Senshi - Ai - Eien ni... Saturn Fukkatsu Hen
- Sailor Moon Sailor Stars
- Sailor Moon Sailor Stars (Kaiteiban)
- Eien Densetsu
- Eien Densetsu (Kaiteiban) - The Final First Stage
Yuuta performed as King Endymion in the following musicals:
- Shin Densetsu Kourin
- Kaguya Shima Densetsu
- Kaguya Shima Densetsu (Kaiteiban) Natsuyasumi! Houseki Tankentai
Yuuta performed as Count Dracul in the following musicals: