His favorite color is blue. His favorite word is 'arigatou' (Japanese for thanks).
At the 2nd Seiyu Awards this year, March 2008, in Tokyo, he won for best male supporting character.
His first lead role was voicing Kunisaki Yukito in Air.
He graduated from the seiyū school Aoni Jyuku in 2000.
His agency profile lists his vocal range from G to E flat.
He claims to be an expert at cooking curry. Aside from that, however, he can't cook anything.
He has stated that he is hopeless with computers and technological equipment.
He is skilled at soccer and darts.
He has released two albums: Hinemosu (07.03 2007) and Untitled (01.28 2008)
His hair grows very quickly, whilst his facial hair grows very slowly - it can go up to two days with no growth showing at all.
He is a major fan of the Gundam anime series.
He has two radio shows: One by himself; Ono Daisuke no GIG ra Night!, and one together with Kamiya Hiroshi: Kamiya Hiroshi & Ono Daisuke no DearGirl~Stories~
During his time as a seiyū for the show The Melancholy of Haruhi Suzumiya, he was the first of the seiyūs to learn the choreography which the main characters were performing during the ending theme for the show.
Chinese noodles, nuts, and almonds are among his favorite foods.
He dislikes raisins and crowded trains.
He weighs 64 kg (~141 lbs.), his height is 174 cm (5'8.5"), and his blood type is O.
He was previously employed by Aoni Production, but is now working under Mausu Promotion.
He is usually typecast as a person who holds himself in high regard, as a hero, a cool-spirited youth or an intellectual.
His role as Itsuki Koizumi from the show The Melancholy of Haruhi Suzumiya was his breakout role; raising his popularity substantially.