1
Ochaco Uraraka - My Hero Academia
2
Obi - Snow White with the Red Hair
3
Okarun - Dandadan
4
Obanai Iguro - Demon Slayer
5
Orion - Amnesia: Memories
6
Osamu Miya - Haikyuu!!
7
Otabek Altin - Yuri!!! on Ice
8
Osamu Dazai - Bungo Stray Dogs
9
Olivier Mira Armstrong - Fullmetal Alchemist Brotherhood
10
Orihime Inoue - Bleach
11
Onyankopon - Attack on Titan
12
Obito Uchiha - Naruto
13
Ogun Montgomery - Fire Force
14
Otohime - One Piece
15
Orochimaru - Naruto
16
Oushi Ashioki - A Sign of Affection
17
Oluo Bozad - Attack on Titan
18
Overhaul - My Hero Academia
19
Ogai Mori - Bungo Stray Dogs