The sign in the town includes the motto Friends Gather at Knot Island (Japanese: ごえんが あつまる むすびじま).
Demographics
The population of One Island is 38, with 10 of the residents being located in the town (this excludes Bill and the Pokémon Center receptionist, but does include Celio).
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
In the anime
One Island appeared in The Search for the Legend, where Ritchie arrived there on a ferry, along with a Trainer named Silver. Although the island had been evacuated due to the imminent eruption of Mt. Magma, Silver disembarked the ship when it briefly stopped there, prompting Ritchie to follow him. He learned that Silver had come to Mt. Magma in order to fulfill his childhood dream of battling Moltres. However, as they encountered Moltres at the summit of Mt. Magma, they found it in a weakened state. Butch and Cassidy, who had accompanied the two in disguise, attempted to capture Moltres, but were eventually defeated.
After Moltres restored its strength using the volcano's magma, Silver started battling it with his Salamence. However, the battle was interrupted when the predicted eruption of Mt. Magma started happening, forcing Ritchie and Silver to flee. Despite this setback, Silver was still determined to finish his battle with Moltres someday.
In Now You See Me..., Red, Blue, Green, and Bill all boarded the Seagallop to One Island. Green was travelling to reunite with her parents, who had relocated there. Just before the Seagallop docked, Green was attacked by an invisible Pokémon, which also trapped her parents in a black hole. Overcome by trauma following the incident, Green was taken to the Pokémon Network Center to recover. Meanwhile, Red and Blue encountered Ultima, who took both of them to Two Island to learn her ultimate moves in order to combat the unseen opponent better.
In Don't Doubt Deoxys, a mob tried to storm the Network Center, as Team Rocket was attacking the Sevii Islands to capture of the Pallet TownPokédex holders, and the mob wanted to hand Green over to them to make the attack stop.
In Some Things Are Better Left Unown, the Seagallop ferried Ultima back to One Island on her request. It picked up Green, who had recovered enough and was escaping from a mob, and took her and Ultima to Five Island to reunite with Red.
The island in the anime
The town in the anime
The island in the Adventures manga
The town in the Adventures manga
