Ono is also known as the voice of Tetsuya Kuroko, the protagonist of Kuroko's Basketball, Mikaela Hyakuya in Seraph of the End, Ryunosuke Akutagawa in Bungo Stray Dogs, and Harry Potter in the Harry Potter film series's Japanese dub.
Kensho Ono was born in 1989 in Fukuoka, Japan. He debuted as a voice actor in 2001 by voicing Harry Potter, the protagonist of the Harry Potter series. He would reprise several of Daniel Radcliff's roles and expand his career to voice acting in animes and playing in dramas. In 2014, Kensho Ono debuted his singing career with his album FANTASTIC TUNE and released several other albums over the years.
- In a 2020 Anime Expo interview, Kensho Ono says that during his audition, he was unsatisfied with his performance on Giorno's battlecry and asked for a redo even though the casting director had greenlit his performance. He theorizes that it helped him get the role since it showed his commitment.
- Kensho Ono found it challenging to say Giorno's battle cry "Muda Muda" rapidly and had to train while driving to get it right. He mentions that scrunching up the face helped him say the battle cry more rapidly.