From Bulbapedia, the community-driven Pokémon encyclopedia.
Celio (Japanese: ニシキ Nishiki) is a Pokémon Storage System programmer in the Sevii Islands and good friend of Bill.
In the games
Celio runs the Pokémon Net Center on Knot Island in Pokémon FireRed and LeafGreen. He needs the player's help to finish the incomplete Pokémon Network machine. This machine is capable of transferring Pokémon between Kanto and Hoenn. Communication with Hoenn will not function until the Ruby and Sapphire have been collected by the player. To assist with this quest, Celio will give the Rainbow Pass and upgrade the Town Map so it shows the locations of the final four Sevii Islands. If the map had not previously been obtained, he will give the map for Kanto as well. According to Bill via the Fame Checker, Celio was praising the work that the player had done for him.
In the manga
In the Pokémon Adventures manga
In the FireRed & LeafGreen chapter of the Pokémon Adventures manga, Red, Blue, and Bill visit Celio on Knot Island and leave an unconscious Green in his care after she was attacked by Deoxys. He later helped her escape, after she regained consciousness, by wrestling away the angry mob trying to capture her. Later, in PS295, Celio aids Bill in removing the Ruby and Sapphire gems placed on an amplifier which allows Deoxys to assume its Normal and Speed Formes.
Celio made a cameo appearance in Epilogue on the Seagallop Ferry which sailed into the Battle Frontier.
In the TCG
The following are cards mentioning or featuring Celio or his services in the Pokémon Trading Card Game.
|| ニシキ Nishiki
|| From 錦木 Nishikigi (winged spindle) and possibly 二色空木 Nishiki-Utsugi (Weigela decora (Nakai)).
| English, German, Italian, Spanish
|| May refer to the acronym for the Corps of Engineers Library Information Online.
|| A play on Bill's French name, Léo. Also similar to his English name.
||서유석 Seo Yuseok
||From the name 錦輝 Nishiki.
|Chinese (Mainland China)
||阿锦 Ā Jǐn
||From 錦 Nishiki.