Cerulean Cave

Cerulean Cave - Kanto

Overviewing collage Cerulean Cave 1F Cerulean Cave 2F Cerulean Cave B1F

Location A positional vantage point of Cerulean Cave in Kanto.

Resources Battleable NPCs 5 Ground-lootable items 24 Berry trees 0

Cerulean Cave is a Kanto that is situated on the outskirts Cerulean City. It can be entered from the northeasternmost expanse of land of the eponymous city, which is reachable from the waterway that confluently flows from Route 24.

As one of the end-game training areas, it is only made accessible upon completing the eponymous quest; since this prerequires extensive access to both regions, it will not be made accessible until one has completed the biregional gamut of gyms. Until the quest is completed, a guard will occlude your entry into this cave.

With the wild-Pokémon spawns averaging out in the high-50s and low-60s neighborhood and spawnsets that predominantly comprise evolved-stage Pokémon, this is considered the most potent training area in PRO. It also houses the highest-leveled NPC trainers that are known, thereby richening the experience-points payouts that are attainable from this area.

Notable miscellanies

Naero

Main article: Naero

Naero is challengable on the basement floor of this cave. He cools down after 12 days; that duration is halved to 6 days with active membership.

Defeating him will reap access to all Daycare Centers in PRO; by virtue of this access, you will also have tuteeship access to Egg Moves, since the Egg Moves-tutors are stationed in each of them.

Naero also multitudinously rewards baby-stage Pokémon each time he is defeated.

Mewtwo

An overworld-interactable Mewtwo inhabits the basement floor.

While this Mewtwo is not catchable, you will automatically register its seen-data entry in your Pokédex by battling it; this is needed for the Mew quest, which stipulates that 150 seen-data entries of Generation I Pokémon is needed in order to access Mew's inhabiting island, including Mewtwo's.

If you have battled this Mewtwo yet have lost its seen-data entry, you can use the restitutionary machine in Professor Oak's lab in Pallet Town in order to recover it.

PP Up-vendor

On the second floor, a PP Up-vendor will sell you the item for 15,000 apiece for up to 5 times per day.

Wild Pokémon

1F

Land

Spawn Information Temporarily Unavailable

Since 17 July 2026, the public Spawn Dump Page has been temporarily disabled and will remain unavailable for an indefinite period.

Because the Pokémon Revolution Online Wiki relied on this data source, it is currently unable to display spawn locations.

For the time being, please rely on the in-game spawn information instead. Spawn information will return once a public data source becomes available again.

Water

Surfing

Spawn Information Temporarily Unavailable

Since 17 July 2026, the public Spawn Dump Page has been temporarily disabled and will remain unavailable for an indefinite period.

Because the Pokémon Revolution Online Wiki relied on this data source, it is currently unable to display spawn locations.

For the time being, please rely on the in-game spawn information instead. Spawn information will return once a public data source becomes available again.

Fishing

Spawn Information Temporarily Unavailable

Since 17 July 2026, the public Spawn Dump Page has been temporarily disabled and will remain unavailable for an indefinite period.

Because the Pokémon Revolution Online Wiki relied on this data source, it is currently unable to display spawn locations.

For the time being, please rely on the in-game spawn information instead. Spawn information will return once a public data source becomes available again.

2F

Spawn Information Temporarily Unavailable

Since 17 July 2026, the public Spawn Dump Page has been temporarily disabled and will remain unavailable for an indefinite period.

Because the Pokémon Revolution Online Wiki relied on this data source, it is currently unable to display spawn locations.

For the time being, please rely on the in-game spawn information instead. Spawn information will return once a public data source becomes available again.

B1F

Land

Spawn Information Temporarily Unavailable

Since 17 July 2026, the public Spawn Dump Page has been temporarily disabled and will remain unavailable for an indefinite period.

Because the Pokémon Revolution Online Wiki relied on this data source, it is currently unable to display spawn locations.

For the time being, please rely on the in-game spawn information instead. Spawn information will return once a public data source becomes available again.

Water

Surfing

Spawn Information Temporarily Unavailable

Since 17 July 2026, the public Spawn Dump Page has been temporarily disabled and will remain unavailable for an indefinite period.

Because the Pokémon Revolution Online Wiki relied on this data source, it is currently unable to display spawn locations.

For the time being, please rely on the in-game spawn information instead. Spawn information will return once a public data source becomes available again.

Fishing

Spawn Information Temporarily Unavailable

Since 17 July 2026, the public Spawn Dump Page has been temporarily disabled and will remain unavailable for an indefinite period.

Because the Pokémon Revolution Online Wiki relied on this data source, it is currently unable to display spawn locations.

For the time being, please rely on the in-game spawn information instead. Spawn information will return once a public data source becomes available again.

Items

1F

Item		Quantity	Cooldown	Location
	Rare Candy	1	14 days	Shrouded under the crystallic rocks north of the entrance
	Revive	1	Indefinite	Underneath the crystallic rocks nearest to the eastmost 2F ladder
	Full Restore	1	Indefinite	Invisibly placed on x-coordinate 27 and y-coordinate 38
	Hyper Potion	1	Indefinite	Interposed between three Rock Smash-destructible rocks on x-coordinate 10 and y-coordinate 36
	Nugget	1	19 days	Placed next to the 2 ladder on the intersectional 16 coordinate
	Sea Incense	1	Indefinite	X-coordinate 29 and y-coordinate 9
	Max Elixir	1	Indefinite	On the mountainside east of the bridge's trisection

2F

Item		Quantity	Cooldown	Location
	Ultra Ball	1	Indefinite	X-coordinate 11 and y-coordinate 22
	PP Up	1	Indefinite	X-coordinate 15 and y-coordinate 29
	Odd Incense	1	Indefinite	X-coordinate 41 and y-coordinate 28
	Full Heal	1	Indefinite	X-coordinate 48 and y-coordinate 30 (invisible)
	Zinc	1	Indefinite	X-coordinate 48 and y-coordinate 20 (invisible)
	Ultra Ball	1	Indefinite	X-coordinate 39 and y-coordinate 17 (invisible)
	PP Up	1	Indefinite	Encrusted in the crystallic rocks on x-coordinate 32 and y-coordinate 18
	TM24 - Thunderbolt	1	Indefinite	Occluded by Rock Smash-destructible rocks in the northeasternmost cul-de-sac
	Protein	1	Indefinite	X-coordinate 8 and y-coordinate 13 (invisible)

B1F

Item		Quantity	Cooldown	Location
	Max Potion	1	12 days	Cornered by two Rock Smash-destructible rocks on the intersectional 14 coordinate (invisible)
	Ultra Ball	1	Indefinite	X-coordinate 6 and y-coordinate 31
	Dusk Stone	1	Indefinite	X-coordinate 29 and y-coordinate 26
	Revive	1-4	Indefinite	X-coordinate 32 and y-coordinate 9
	Ultra Ball	1	Indefinite	X-coordinate 26 and y-coordinate 21
	Nugget	1	Indefinite	Encrusted in the crystallic rock on x-coordinate 38 and y-coordinate 13 (adjacent to a Rock Smash-destructible rock)
	Black Sludge	1	Indefinite	On an expanse in the southeasternmost corner of the floor
	Electirizer	1	Indefinite	Eastward of Naero

NPC Battlables

2F

Cerulean Cave 2F Trainers

Old Man Trevor Omastar Lv. 85 Kabutops Lv. 86 Aerodactyl Lv. 87

Lass Lara Venusaur Lv. 80 Charizard Lv. 80 Blastoise Lv. 80

Hiker John Crobat Lv. 86 Noctowl Lv. 87 Ledian Lv. 87

Nurse Joy Happiny Lv. 90 Chansey Lv. 90 Blissey Lv. 90

Lass Janette Vaporeon Lv. 80 Jolteon Lv. 80 Flareon Lv. 80 Espeon Lv. 80 Umbreon Lv. 80 Eevee Lv. 80

All NPCs cool down after 7 days unless noted contrariwise. All NPCs may have new Pokémons, or higher level Pokémons upon rematch unless noted contrariwise.

B2F

Naero

Main article: Naero

Naero

Togekiss Move Type Category Base Power Accuracy Thunder Wave Electric Status — 100 Air Slash Flying Special 75 95 Flamethrower Fire Special 90 100 Roost Flying Status — —

Snorlax Move Type Category Base Power Accuracy Crunch Dark Physical 80 100 Body Slam Normal Physical 80 100 Rest Psychic Status — — Sleep Talk Normal Status — —

Mr. Mime Move Type Category Base Power Accuracy Icy Wind Ice Special 55 95 Psychic Psychic Special 90 100 Confuse Ray Ghost Status — 100 Shadow Ball Ghost Special 80 100

Blissey Move Type Category Base Power Accuracy Seismic Toss Fighting Physical — 100 Softboiled Normal Status — Thunder Wave Electric Status — 100 Flamethrower Fire Special 90 100

Magmortar Move Type Category Base Power Accuracy Thunder Punch Electric Physical 75 100 Cross Chop Fighting Physical 100 80 Flamethrower Fire Special 90 100 Ice Punch Ice Physical 75 100

Electivire Move Type Category Base Power Accuracy Thunderbolt Electric Special 90 100 Earthquake Ground Physical 100 100 Lava Plume Fire Special 80 100 Focus Blast Fighting Special 120 70

Emboldened moves avail from a STAB bonus when deployed by that Pokémon. Italicized moves are functionally broken; see their individualized pages for more information.

Mewtwo

Mewtwo Move Type Category Base Power Accuracy Thunderbolt Electric Special 90 100 Psychic Psychic Special 90 100 Ice Beam Ice Special 90 100 Blizzard Ice Special 110 70