Greben
When it appears
As a tier-3 Nexomon, it only turns up in the grass after you beat Ross and Nora in Laboratory Ruins Boss, or from the start in Custom Mode with high-tier encounters allowed.
Capturing
Its favourite foods are Fries, Apple and Pink Pecana, Coral'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 |  13 |  140 |  8 |  4 |  11 |
| 25 | 93 | 150 | 50 | 39 | 53 |
| 50 | 177 | 160 | 93 | 76 | 96 |
| 75 | 261 | 170 | 137 | 112 | 139 |
| 99 | 341 | 179 | 179 | 147 | 181 |
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
 Hydro Sphere | 4 |  Water | 80 | 10 |
 Plasma | 7 |  Normal | 60 | 5 |
 Whirlpool | 9 | Water | 25 | 10 |
 Scratch | 16 | Normal | 40 | 5 |
 Explosive Water | 20 | Water | 80 | 10 |
 Absolute Barrier | 22 | Normal | — | 20 |
 Blue Mirror | 27 | Water | — | 20 |
 Recover | 32 | Normal | — | 5 |
 Frost Bite | 33 | Water | 75 | 15 |
 Kinetic Sponge | 40 | Water | — | 15 |
 Water Blast | 44 | Water | 100 | 15 |
 Sleep Song | 48 | Normal | — | 15 |
 Poison Bubbles | 50 | Water | — | 10 |
 Wave | 54 | Water | 15 | 10 |
 Toxic Splash | 58 | Water | 35 | 5 |
 Ocean Force | 62 | Water | — | 15 |
Encounter locations
This location is a cave, meaning wild Nexomon can appear anywhere you walk.
| Nexo Tower Extra West Room Tomb of Omnicron | 3.3% | |
| Nexo Tower Hallway Left Tomb of Omnicron | 2.6% | |
| Nexo Tower Stairs 2 Tomb of Omnicron | 3.1% | |
| Underwater City East Road 1 The City of Cadium | 2.4% | |
| Underwater City East Road 2 The City of Cadium | 2.5% | |
| Underwater City Engine Room 1 The City of Cadium | 2.9% |
- Favourite foods
- Other
- Evolves from
History
Changes to this nexomon across game updates.
- Other languages +格莱本
- On the map
- +Updated
- Other languages +Гребен
- On the map
Other languages: GrebenГребенグレベン그레벤格莱本