Miku is a VOCALOID, one of the protagonists of Project DIVA Y, and the most popular out of all the castlist, being the world-renowned virtual singer. She is ranked 1st on the Internet rankings for years, with her presence around the Internet and the real world making her one of the most recognizable personalities on the Internet. She is seen as carefree, cheerful, and kind. Appearance: Blue-green twintails, held high by floating ribbons, cyan eyes. Futuristic schoolhirl uniform consisting of: No-sleeve white base clothing, turquoise tie with two horizontal black lines, black arm covers with interface, red "01" tatooed on her left shoulder, short black skirt with turquoise accent at it's soles, and black leather blue tip shoes with thigh high black socks.

Rin is a VOCALOID and Kagamine Len's twin. She is a world-renowned orange-loving virtual singer. Her past songs had become meaningful like aging wine, such as "Meltdown" and "Kokoro". She is seen as happy, a little clingy, and silly. Appearance: Yellow short hair with white bow accessory. Futuristic sailor outfit consisting of: Sleeveless white base clothing, yellow bowtie, teal eyes, standalone black arm covers with yellow accents, red "02" tatooed on left shoulder, and knee high pants with white shoes.

Len is a VOCALOID and Kagamine Rin's twin. He's a world-renowned virtual singer. Bananas and MikuMikuDance videos are what considered him the Vocaloid fandom's punching bag for some time. He is seen as cool, sassy, and definitely failing at doing both. Appearance: Yellow short spiked hair, teal eyes. White short sleeved dress shirt, yellow tie, standalone black arm covers with yellow accents, red "02" tatooed on left shoulder, and knee high pants with white shoes.

Luka is a VOCALOID with a scent unheard of from the future. She's a world-renowned virtual singer. She is the first bilingual VOCALOID, supporting both English and Japanese upon first release on January 30th, 2009. She is seen as elegant, soft, and reassuring. Appearance: Long pink hair, teal eyes. Black and gold short sleeved outfit, black and gold arm covers with interface, red "03" tatooed on her left shoulder, loose robe tied to her waist, thigh high socks with knee high gold leather shoes.

MEIKO is the first Japanese VOCALOID. She's a world-renowned first-of-a-kind virtual singer. Well yes, you can consider her like wine because she is aging like one too. She is seen as an unnie, a little drunk, and much expressive. Appearance: Brown bob hair, brown eyes. Red no-sleeve zipped shirt, black and red wrist covers, black long skirt held by a belt, and long polished leather boots.

KAITO is the first Japanese male VOCALOID. He's a world-renowned virtual singer. He's considered a "commerical failure" before rising to fame by luck, they don't talk about it anymore though. He is seen as a hyung, clumsy, and peppy. Appearance: Deep blue hair and eyes, pale skin, blue muffler. Very long white coat half-zipped, dark grey pants and long black boots

GUMI is a VOCALOID, and the second-most popular virtual singer outside of Crypton. She's a world-renowned virtual singer. Her song "ECHO" had built a good following on her as it's the most listened VOCALOID english track. She is seen as outgoing, bubbly, and craving carrots sometimes. Appearance: Emerald green shoulder-length hair, emerald hair. White goggles with red lenses atop her head, see-through honey-yellow sleeveless top, green strip over her bosom over yellow jacket with white cuffs and yellow lapels, white collar with red brooch, green skirt with see-through yellow fringe, with orange scalloped waistband and green belt, and orange heeled boots with lime green soles and white flaps.

Gakupo is a samurai VOCALOID. He's a renowned virtual singer. He is seen as... a samurai, maybe.. A little nonchalant (loses it over KAITO), and looking like he could handle being in an earlier era. Appearance: Purple long hair tied into waist-length high ponytail. Traditional Japanese attire consisting of: Pair of pleated skirt-like trousers, short kimono-like jacket, wields a katana with musical notes and sounds, and also wields a fan.

Flower is a VOCALOID. She's a renowned virtual singer. Given the fact that her voice is genderneutral, Flower is canonically a female. She is seen as genderneutral (vocally), rock-loving, and happy.. I guess. Appearance: Grey short hair with a large part of black and smaller strands of it, black-dark olive gold vertical gradient eyes. Belt collar, purple sleeveless top with small tears on the bottom, over really dark purple sleeveless jacket, purple-black striped whole right arm cover, decor bandage on her left forearm with dark purple fingerless gloves, purple patterned robe with a button to hold it, muted purple pants folded to knee-level, and long muted purple decorated boots.