A new Pokémon, Korechū (Japanese: これュウ and これちゆぅ, sic) was revealed in a magazine page scan also depicting a DS port of Hey You, Pikachu!. PokéLord later admitted it had composed it as a joke.[1]
Chance (Japanese: チャーンスChānsu), believed to be a pre-evolutionary form of Chansey, is revealed as a new TCG card.[2][3] Its only attack is "April Fool".
Pokemopolis posted a cease and desist letter from a law firm representing Nintendo that claimed the site had tarnished Nintendo's image.
Serebii.net forums had an elaborate custom avatar prank which angered many.
Legendary Pokémon showed a fake magazine page scan (actual about The Legend of Zelda), revealing the shadow of a Pokémon named エイプリルフール — a katakana rendition of April Fool.
Dogasu's Backpack changed into "Mod Soul" Kon's Backpack, a Bleach site.
Dogasu's Backpack
Non-hoaxes
Real announcements misinterpreted as hoaxes included:
Pokémon Casewraps[4] - a customise your consoles with Pokémon images, but as the information was released on April 1, there was confusion as to whether it was real.