PokeBonk Onix
Pokemon · rank 5 of 79 League Pokemon · last checked 2026-10-20
PokeBonk Onix is a Rock and Ground League Pokemon of uncommon rarity. It starts each run with Rock Tomb, carries the Rock Head passive and the Rock Snake Ultimate, and it does not evolve. You unlock it with a League challenge and then catch it in a later run. Its Kit Score is 62.8, rank 5 of 79: S tier.
Onix at a glance
| Pokedex number | #095 |
| Type | Rock / Ground |
| League rarity | Uncommon |
| Tier | S (Kit Score 62.8, rank 5 of 79) |
| Starting move | Rock Tomb |
| Passive | Rock Head |
| Ultimate | Rock Snake |
| How to get it | League challenge, then a capture |
| Evolves | No |
| Base stat total | 385 |
How to unlock Onix in PokeBonk
Onix joins your League in two steps. First, finish its League challenge; the counters add up across runs unless a goal says "in a single run":
- Win Viridian Forest.
Catching Onix
Then Onix can show up as a Wild Encounter in your next runs, 50 to 120 seconds into a zone. It runs away after 150 seconds, so weaken it and throw a Poke Ball before then. The PokeBonk unlock Pokemon guide lists every challenge.
Onix moves in PokeBonk
Each League Pokemon has a fixed kit of four moves. Move 1 is equipped from the start; moves 2, 3 and 4 are offered as new-move cards at player levels 2, 4 and 7. A run holds three moves until you buy the 4th move slot in the Lab. Hit damage below is the move's base hit at level 1 before your stats, items and type bonus; cooldowns shrink with attack speed.
| Slot | Move | Type | Class | Shape | Unlocks | Base hit | Cooldown |
|---|---|---|---|---|---|---|---|
| 1 | Rock Tomb | Rock | Physical | Heavenly Impact | Start | 30 | 1.5 s |
| 2 | Stealth Rock | Rock | Special | Trap | Level 2 | 35 | 2.34 s |
| 3 | Iron Tail | Steel | Physical | Strike | Level 4 | 24 | 0.91 s |
| 4 | Head Smash | Rock | Physical | Charge | Level 7 | 44 | 2.44 s |
Onix passive: Rock Head
+25 armor and +15% HP, in exchange for -8% speed. Your Charges deal +30% damage. Every 6 s rocks fall on the 3 closest enemies.
Rock Tomb, Stealth Rock, and Head Smash match Onix's type, so they deal 25% more damage (same-type bonus). Moves can also be learned from its learnset and from other League members of the same type, which the PokeBonk beginner guide explains.
Onix Ultimate in PokeBonk
Onix's Ultimate gets stronger as the line evolves: each form has its own version. Press R (Y on a controller) when the bar is full, or turn on Auto Ultimate with the Y key. The PokeBonk Ultimate guide explains how the bar charges.
| Form | Ultimate | Duration | What it does |
|---|---|---|---|
| Onix | Rock Snake | 2.8 s | Onix rises from the ground in a circle around you, raising rocks and fissures that stun. With Maturity it goes around twice and rocks fall from the sky. |
Onix stats in runs
The game turns base stats into run stats with the share of each stat in the base stat total, so a balanced Pokemon and a lopsided one end up with different strengths. Each evolution stage adds 0.12 to the HP and damage multiplier. These are the starting values before Lab upgrades, items and vitamins:
| Form | Stage | Max HP | Armor | Speed | Physical | Special | Damage |
|---|---|---|---|---|---|---|---|
| Onix | 0 | 95 | 17.1 | 1.05x | 0.96x | 0.91x | 1x |
Onix base stats
Base stats from the game's Pokedex file (base stat total 385):
| HP | Attack | Defense | Sp. Atk | Sp. Def | Speed |
|---|---|---|---|---|---|
| 35 | 45 | 160 | 30 | 45 | 70 |
Where Onix appears as a boss
Besides being playable, Onix is listed as a boss on the maps: Rocky Desert as a possible zone 1 Totem. Boss HP is budgeted from your own damage per second, so the fight length stays close to the game's targets; the PokeBonk maps page lists every boss slot.
PokeBonk Onix FAQ
How do you unlock Onix in PokeBonk?
Finish its League challenge (win Viridian Forest), then catch it when it appears as a Wild Encounter in a later run.
Is Onix good in PokeBonk?
By Kit Score it ranks 5 of 79 League Pokemon, in S tier. The score reads its kit damage, HP, armor and speed at its final form; passives that trigger effects and the Ultimate are not counted, so see the tier list for the method.
What is Onix's Ultimate?
Rock Snake. Fire it with R on a keyboard or Y on a controller once the bar is full.
See where all 151 Pokemon land on the PokeBonk tier list, or browse the full PokeBonk Pokedex.