Guild Island - Kanto

Overviewing collage

Guild Island Cave

Guild Island Falls

Guild Island Forest

Guild Island is an exclusive area for the very best PvP players. It is reserved for the 3 highest-rated guilds. However, any guild that donates 20 Mysterious Tickets will gain access to Guild Island for the season the donations were made in.
During the April 2021 season, Guild Island was made accessible to all guilds with no prerequisites needed, other than being in a guild.
Sailor Gordon in Vermilion City will take you to Guild Island for free.

Notable Miscellanies

Guild Island Ghost House

Guild Island Ghost House is a building on the northern part of the island, it is exclusively filled with move tutors. The moves tutors change with every PvP season.

Mysterious Cultist

Main article: Mysterious Cultist (boss)

Hard

Mysterious Cultist's Lineup

Dragonite

Nature	Ability	Item
Random	Multiscale	Lum Berry

Move	Type	Category	Base Power	Accuracy
Fire Punch	Fire	Physical	75	100
Extreme Speed	Normal	Physical	80	100
Dragon Dance	Dragon	Status	—	—
Dragon Claw	Dragon	Physical	80	100

Conkeldurr

Nature	Ability	Item
Random	Guts	Flame Orb

Move	Type	Category	Base Power	Accuracy
Earthquake	Ground	Physical	100	100
Knock Off	Dark	Physical	65	100
Drain Punch	Fighting	Physical	75	100
[[]]			—

Mega Gengar

Nature	Ability	Item
Random	Shadow Tag	Gengarite

Move	Type	Category	Base Power	Accuracy
Sludge Wave	Poison	Special	95	100
Trick	Psychic	Status	—	100
Shadow Ball	Ghost	Special	80	100
Thunderbolt	Electric	Special	90	100

Ferrothorn

Nature	Ability	Item
Random	Iron Barbs	Leftovers

Move	Type	Category	Base Power	Accuracy
Power Whip	Grass	Physical	120	85
Stealth Rock	Rock	Status	—	—
[[]]			—
[[]]			—

Rotom-Wash

Nature	Ability	Item
Random	Levitate	Choice Scarf

Move	Type	Category	Base Power	Accuracy
Volt Switch	Electric	Special	70	100
Hydro Pump	Water	Special	110	80
Trick	Psychic	Status	—	100
[[]]			—

Greninja

Nature	Ability	Item
Random	Random	Life Orb

Move	Type	Category	Base Power	Accuracy
Dark Pulse	Dark	Special	80	100
Ice Beam	Ice	Special	90	100
Hydro Cannon	Water	Special	150	90
[[]]			—

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

The order he throws his Pokémon after Dragonite are random

Psychic Marina

Psychic Marina can offer to reroll the IVs of a Legendary Pokémon. You will need an Reroll Ticket to do so.
She also offers to restore one of the last 3 rerolled IVs of a Legendary Pokémon for 50,000.

Psychic Ramona

Psychic Ramona is an NPC that gives PvP challenges. For each frontier you reach, she will reward you with certain prizes.

PvP Coin Master

A PvE Coin master can be found here. Check the main page to see what you can purchase.

PvE Coin Master

A PvP Coin master can be found here. Check the main page to see what you can purchase.

TM Sellers

Several TM sellers can be found on the outer edges of Guild Island. The TM sellers change with every PvP season.

Wild Pokémon

Spawns have a 12.5% chance of changing spawn-sets every 12 hours. Variances include: Rain, Sun, Sand, Hail, Offense, Balanced, Stall, Support and Trick Room.
These can be voted on via the Spawn Ranger. Subsets include Guild Island, Guild Island Cave, Guild Island Forest, and Guild Island Falls.