|Voice Actor||Nozomi Sasaki|
|Fur Color||Light brown (fur)|
|Magical Ranking||Glass (JP1)|
|Partner||Nobara Kitajima (JPH)|
|Magical Item||Jewel Pod|
Io is a Holland Lop rabbit with long-furred, drooping ears and a short rabbit tail. He has purple Jewel Eyes made of cordierites. He wears a purple ribbon bowtie on his neck.
Io is loyal but sometimes he can be childish. He is also easy to get attracted by ladies, especially Opal. He sometimes ends his speech with the phrase "Dachi".
He is in the background in the other seasons.
- Io's jewel motif is the cordierite, called iolite in gemology. Cordierite is a type of magnesium iron aluminium cyclosilicate used as a catalytic converter.
|Magical Red||Ruby • Garnet • Rin • Ryl • Kohaku • Titana • Sango • Nix • Alex • Brownie • Jasper • Lolip • Rosa|
|Magical Blue||Sapphie • Luna • Yuku • Aqua • Kaiya • Opal • Amelie • Lapis • Io • Topaz • Charotte • Larimar|
|Magical Green||Peridot • Chite • Prase • Rald • Flora • Tour • Milky • Nephrite • Tata • Kris • Angela|
|Magical Black||Diana • King • Dian • Labra • Coal • Granite • Luea|