Characters
- orla 9
- orlha 1
- ornik 3
- ornn 30
- orochi 43
- orochimaru 57
- ororon 11
- orphaner dualscar 6
- orphea 4
- orphee lam tao 3
- orpheus 2
- orphie magnusson 52
- orsola aquinas 40
- ortega 3
- ortfine fredericka von eylstadt 12
- orthworm 1
- orville 2
- oryou 9
- oryx 1
- osaka | ayumu kasuga 172
- osakabehime 356
- osama bin laden 2
- osamu dazai 25
- osamu mikumo 40
- osamu miya 17
- osamu sugo 6
- osaragi 4
- oscar 34
- oscar bale 1
- oscar francois de jarjayes 3
- oscar lawrence 8
- oscar pine 12
- oscar proud 1
- oshawott 14
- oshichi 1
- oshida 7
- oshinori hororo 3
- oshizu murasame 9
- osira 54
- oslow 2
- osomatsu matsuno 231
- oswald 9
- oswidge 1
- otabek altin 18
- otachi 1
- otaki aoyama 2
- otako 22
- otaru mamiya 14
- otegine 41
- othinus 6