I.O.C.U.S.
Artist with "Pokus" album

I.O.D
Artist with "Mundane Existence" album

I.O.I
Artist with the following albums: "Chrysalis", "miss me?"

I.O.N.U.
Artist with "Unity of hate" album

I.O.S.
Artist with the following albums: "Voor Altijd", "4 (Promo)"

i.o.sound
Artist with the following albums: "StarTRain ORIGINAL SOUNTRACK", "アオリオ VOCAL COLLECTION"

I.O.U.
Artist with the following albums: "Nothing", "I Owe You"