January

Prima: 14 January 2008

Unity-chan!: 14 January 2016

LEON: 15 January 2004

LOLA: 15 January 2004

IA: 27 January 2012

Fukase: 28 January 2016

Luka Megurine: 30 January 2009

Nana Macne: 31 January 2014

February

CYBER DIVA: 4 February 2015

Xin Hua: 10 February 2015

kokone: 14 February 2014

UNI: 14 February 2017

Nemu Yumemi: 16 February 2017

KAITO: 17 February 2006 (Crypton print of release date, alternatively 14 February 2006 as per Yamaha print)

Mirai Komachi: 22 February (Bandai Namco Studio Profile)

March

anon & kanon: 3 March 2014

April

Kasane, Teto 1 April 2008 

Lapis Aoki: 6 April 2012

Ling Yuezheng: 12 April (Official biographical information)

Stardust: 13 April 2016

VY2: 25 April 2011

May

MAYU: 6 May (As written on the official page)

v flower: 9 May 2014

Iroha Nekomura: 14 May 2009 (Start of the Hello Kitty to Issho! Project)

June

Azuki Masaoka: 11 June (Character profile on the Project 575 official homepage)

ZOLA PROJECT: 21 June 2013

Longya Yuezheng: 24 June 2017

GUMI: 26 June 2009

Sweet ANN: 29 June 2007

July

MIRIAM: 1 July 2004

YANHE: 11 July 2013

Tianyi Luo: 12 July 2012

SONiKA: 14 July 2009

Tonio: 14 July 2010

Sachiko: 27 July 2015

Una Otomachi: 30 July 2016

Gackpo Camui: 31 July 2008

August

ARSLOID: 5 August (ARSMAGNA official site)

galaco (Prize): 5 August 2012

Lily: 25 August 2010

LUMi: 30 August 2017

SeeU: 30 August 2011 (Official, Name + Appearance Reveal)

Miku Hatsune: 31 August 2007

September

VY1: 1 September 2010

Rana: 9 September 2014

YOHIOloid: 10 September 2013

Matcha Kobayashi: 13 September (Character profile on the Project 575 official homepage)

October

RUBY: 7 October 2015

Ryuto: 8 October 2010

Chika: 16 October 2014

Mew: 21 October 2011

Zunko Tohoku: 27 October (Character birthday as written on the official blog.)

CYBER SONGMAN: 31 October 2016

November

MEIKO: 5 November 2004

DAINA: 20 November 2015

DEX: 20 November 2015

December

Kiyoteru Hiyama: 4 December 2009

SF-A2 miki: 4 December 2009

Yuki Kaai: 4 December 2009

Piko Utatane: 8 December 2010

Rion Tone: 16 December 2011

MAIKA: 18 December 2013

OLIVER: 21 December 2011

Akari Kizuna: 22 December (Vocalomakets blog post)

AVANNA: 22 December 2012

BIG AL: 22 December 2009

CUL: 22 December 2011

Yukari Yuzuki: 22 December 2011

Bruno: 23 December 2011

Clara: 23 December 2011

Merli: 24 December 2013

Rin/Len Kagamine: 27 December 2007

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