PokeBonk Cloyster
Pokemon · Shellder line · last checked 2026-10-20
PokeBonk Cloyster is a Water and Ice Pokemon that you cannot pick at the start of a run: it is the evolved form of Shellder, a League Pokemon. Play Shellder and it evolves into Cloyster automatically at player level 36, which raises your HP and damage multiplier to 1.12x. Cloyster keeps the Shellder kit and upgrades the Ultimate to Icicle Rain. The line sits in S tier with a Kit Score of 58.1.
Cloyster at a glance
| Pokedex number | #091 |
| Type | Water / Ice |
| Evolves from | Shellder at level 36 |
| League Pokemon to play | Shellder |
| Line tier | S (Kit Score 58.1) |
| Ultimate at this stage | Icicle Rain |
| Run HP multiplier | 1.12x |
| Base stat total | 525 |
How to get Cloyster in PokeBonk
You do not unlock Cloyster directly. First unlock Shellder through its League challenge and catch it; the PokeBonk unlock Pokemon guide lists the conditions. Then pick Shellder for a run and level up: evolution in a run depends only on your player level, not on stones or trades, so Cloyster arrives at level 36.
Each stage adds 0.12 to your HP and damage multiplier, so an evolved form hits harder and takes more hits than the Pokemon you started with. An Eviolite helps until the last stage. See PokeBonk evolution for every line.
Cloyster moves and passive
Cloyster uses the same four-move kit as Shellder; evolving does not swap moves. Its passive is Skill Link: +20 armor and +1 projectile. Like Cloyster, +1 projectile and +10 more armor.
| Slot | Move | Type | Class | Shape | Unlocks |
|---|---|---|---|---|---|
| 1 | Clamp | Water | Physical | Strike | Start |
| 2 | Icicle Spear | Ice | Physical | Burst | Level 2 |
| 3 | Ice Spinner | Ice | Physical | Spin | Level 4 |
| 4 | Icicle Crash | Ice | Physical | Heavenly Impact | Level 7 |
Cloyster Ultimate
At this stage the Ultimate is Icicle Rain, lasting 2.8 seconds: The shell, eighteen icicles falling from the sky on the enemies and a ring of ice spikes around you. The PokeBonk Ultimate guide explains how to charge it faster.
Cloyster evolution levels in PokeBonk
In PokeBonk every evolution happens by player level inside a run, whatever the main games ask for. The Shellder line evolves like this: Shellder evolves into Cloyster at level 36.
Cloyster 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 |
|---|---|---|---|---|---|---|---|
| Shellder | 0 | 97 | 13.3 | 1.01x | 1.08x | 1x | 1x |
| Cloyster | 1 | 107 | 13.9 | 1.02x | 1.04x | 1.01x | 1.12x |
Cloyster base stats
Base stats from the game's Pokedex file (base stat total 525):
| HP | Attack | Defense | Sp. Atk | Sp. Def | Speed |
|---|---|---|---|---|---|
| 50 | 95 | 180 | 85 | 45 | 70 |
Where Cloyster appears as a boss
Besides being playable, Cloyster is listed as a boss on the maps: Celestial Glacier as the listed zone 3 boss (map not open in Season 1). 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 Cloyster FAQ
Can you play Cloyster in PokeBonk?
Yes, by evolving: pick Shellder and reach level 36 in a run. Cloyster is not a separate League pick.
Does Cloyster keep Shellder's moves?
Yes. The kit stays the same; evolving raises your HP and damage multiplier and upgrades the Ultimate.
See where all 151 Pokemon land on the PokeBonk tier list, or browse the full PokeBonk Pokedex.