Cater’s voice actor Kobayashi Tatsuyuki is a singer and musical theater actor. He has been appearing on albums for King of Prism, Prism Paradise, REALIVE! and more since 2014.
Cater is his first and only lead role in a video game and only his third-ever lead voice acting role overall.
Kobayashi explains that he enjoyed anime as a child but was embarrassed to admit it to his friends, who all enjoyed sports, so he joined a sports club to fit. In university a friend convinced him to stop being embarrassed of his interests, inspiring him to become a singer for anime theme songs.
He participated in a national anime song Grand Prix competition in 2012 but did not make it to the final round. He spent a year doing voice and physical training, participated again in 2013 and won the competition, being picked up by his current agency.
Kobayashi’s debut single was the opening theme to 2014’s Battle Spirits Saikyou Ginga Ultimate Zero.
In the November, 2025 issue of Da Vinci Magazine, Kobayashi commented the following:
“The problems we hold deep in our hearts, even if we think we’ve resolved them, they can come back and attack us again. Just a small failure can trigger a flood of memories of past regrets or painful things, and it keeps you awake at night.
I used to be the type to overthink everything but then a senpai told me, ‘don’t think about unnecessary things,’ and now I strictly follow that rule. What’s done can’t be undone, so I try to wake up with the morning sun and think positively about what’s ahead. That kind of lightness is maybe an influence of Cater Diamond, too (laughs).”
Kobayashi has been appearing in musical theater since 2016. His other projects include:
・100 Sleeping Princes & The Kingdom of Dreams 〜Prince Theater〜
・Aoyama Operetta the stage: Mezza Luna / Light and Shadow
・Aoyama Operetta the stage: Storia Parallela Uno
・DANPRI Festival (with Ace’s VA)
・Himitsu no AiPri (with VAs for Trey, Azul)
・IdolTimePripara (with Ace’s VA)
・King of Prism Shiny Rose Stars
・Paradox Live on Stage (with Vargas’ VA)
・Phantom of the Idol (with Sebek’s VA)
・Yu-Gi-Oh! GO RUSH!! (with VAs for Ruggie, Kalim, Neige, Riddle, Cater)
Twisted Wonderland Reference Note 