Yomnom
When it appears
As a tier-2 Nexomon, it only turns up in the grass after you beat Jin in Magma Grotto Town, in the main quest Tyrant Mulcimer, or from the start in Custom Mode with high-tier encounters allowed.
Capturing
Its favourite foods are Green Pear, Banana and Cream Puff, Yummo's, as every stage of a line shares the first one's. Feeding it one adds 15 to your capture chance, where other food adds 5. Catching a Nexomon explains how the whole chance adds up.
Evolution
Cosmic
Every wild one has a 1 in 4,000 chance to be cosmic at first, and 1 in 3,500 later in the story. What improves the odds is on the Nexomon page.
Normal 
Cosmic
Stats by level
Before cores. How stats grow is on the Nexomon page.
| 1 |  12 |  120 |  8 |  4 |  11 |
| 25 | 81 | 126 | 41 | 30 | 48 |
| 50 | 153 | 133 | 76 | 58 | 87 |
| 75 | 225 | 140 | 111 | 85 | 126 |
| 99 | 294 | 147 | 144 | 112 | 163 |
Damage taken
How hard a skill of each element hits it, going by its element. The full damage formula is on the Skills page.
Skill tree
 Psychic Blast | 2 |  Psychic | 75 | 10 |
 Psychic Bomb | 8 | Psychic | 85 | 15 |
 Telepathy | 11 | Psychic | 30 | 10 |
 Plasma | 15 |  Normal | 60 | 5 |
 Psy Burst | 19 | Psychic | 80 | 10 |
 Resistance | 21 | Psychic | — | 15 |
 Power Up | 28 | Normal | — | 10 |
 Kinetic Mirror | 32 | Psychic | — | 20 |
 Smoke Screen | 36 | Normal | — | 15 |
 Cleanse | 38 | Psychic | — | 15 |
 Psy Geyser | 44 | Psychic | 110 | 15 |
 Pendulum | 45 | Psychic | — | 10 |
 Mind Control | 50 | Psychic | 80 | 15 |
 Heal | 54 | Normal | — | 25 |
 Psychic Barrage | 57 | Psychic | 50 | 5 |
 Tornado Kick | 61 | Normal | 35 | 15 |
Encounter locations
| Beach Wilds 7 Palmaya | 6.4% | 4.6% | |
| Bunker Room 2 The Frozen Tundra | 5.6% | 5.5% | |
| Bunker Room 3 The Frozen Tundra | 5.6% | 5.5% | |
| Cave East Khan Woods | 6% | 5.2% | |
| Cave West Hidden Village or Khan Woods | 6% | 5.2% | |
| Woods Cave Khan Woods | 6% | 5.2% |
- Evolves into
- Evolves from
- Favourite foods
- Other
History
Changes to this nexomon across game updates.
- Other languages +尤姆诺姆
- On the map
- +Updated
- Other languages +Йомном
- On the map
Other languages: YomnomЙомномヨムノム욤놈尤姆诺姆