| Name | Level | Stat | Type |
|---|---|---|---|
| Orphan | 118 | ATK +8 | Enemy Kills |
| Original Sinners | 108 | Max HP +40 | Enemy Kills |
| Origin | 118 | DEF +4 | Enemy Kills |
| Orchid Dream | 103 | DEF +4 | Enemy Kills |
| Orator | 28 | SPD +16 | Enemy Kills |
| Opportunity Cost | 70 | Max HP +40 | Enemy Kills |
| Operator | 80 | SPD +16 | Enemy Kills |
| Operator | 60 | Max HP +40 | Enemy Kills |
| Opening Song | 98 | DEF +4 | Enemy Kills |
| Onigiri | 60 | ATK +8 | Enemy Kills |
| One-eyed | 58 | CRIT +4 | Enemy Kills |
| One-Horned Giant | 78 | DEF +4 | Enemy Kills |
| One-Eyed | 48 | SPD +16 | Enemy Kills |
| One Punch | 85 | EVA +16 | Enemy Kills |
| On the water. | 105 | CRIT +4 | Enemy Kills |
| Omnivorous | 55 | Max HP +40 | Enemy Kills |
| Omniscient | 102 | Max HP +40 | Enemy Kills |
| Old fart | 100 | EVA +16 | Enemy Kills |
| Old River Lake | 100 | DEF +4 | Enemy Kills |
| Old Man | 75 | EVA +16 | Enemy Kills |
| Old Lady | 10 | - | Enemy Kills |
| Old | 93 | DEF +4 | Enemy Kills |
| Ogre | 85 | SPD +16 | Enemy Kills |
| Offline | 48 | SPD +16 | Enemy Kills |
| Officer | 30 | ATK +8 | Enemy Kills |
| Offering to heavens. | 100 | ATK +8 | Enemy Kills |
| Off | 85 | EVA +16 | Enemy Kills |
| Odd | 28 | Max HP +40 | Enemy Kills |
| Occupation | 120 | ATK +8 | Enemy Kills |
| Obsessive | 75 | DEF +4 | Enemy Kills |
| Obliterator | 45 | CRIT +4 | Enemy Kills |
| Obedient | 43 | DEF +4 | Enemy Kills |
| Nuts | 65 | ATK +8 | Enemy Kills |
| Nurse | 38 | DEF +4 | Enemy Kills |
| Numeric | 1 | Max HP +40 | Enemy Kills |
| Numbness | 68 | ATK +8 | Enemy Kills |
| Numbing Beans | 75 | EVA +16 | Enemy Kills |
| Nuclear power. | 95 | Max HP +40 | Enemy Kills |
| Nuclear power. | 95 | Max HP +40 | Enemy Kills |
| Nothing Whatsoever | 1 | CRIT +4 | Enemy Kills |
| Not easily deceived. | 130 | Max HP +40 | Enemy Kills |
| Not Tall | 80 | EVA +16 | Enemy Kills |
| Not Looking Back | 85 | ATK +8 | Enemy Kills |
| Not An Octopus | 88 | ATK +8 | Enemy Kills |
| Not Afraid of Insects | 78 | ATK +8 | Enemy Kills |
| Nose-Picker | 85 | DEF +4 | Enemy Kills |
| Non-Threatening | 63 | Max HP +40 | Enemy Kills |
| Non-Stop | 75 | Max HP +40 | Enemy Kills |
| Noisy. | 40 | Max HP +40 | Enemy Kills |
| Nocturnal | 65 | ATK +8 | Enemy Kills |