Frederick - Fire Emblem

Hatsune Miku - Vocaloid

Oerba dia Vanille - FFXIII

Sailor Scouts - Sailor Moon

Zero - Drakengard 3

Original Designs/Costumes (Possible existing source/influence)

Annelotte Kreutz - Queen's Blade

Lightning - FFXIV

Raiden and Metal Gear - Metal Gear Solid 4ciM

Michael and Gavin (Minecraft Versions) - Achievement Hunter

Beauty - Ghost Trick

Subaru and Tsukasa from .hack//SIGN