Galaco was first referred to as a VOCALOID when the VOCALOID Shop's competition for Vocaloid 3 vocals was extended to allow newly release vocals V3 Megpoid - Native and V3 Lily as possible entrants. She was worked on by Stardust Music, Inc. and Internet Co., Ltd. for Windows. She was offered as a prize for anyone who managed to get 1,000+ views on Nico Nico Douga in the Yamaha Shop music competition, but neither her name nor image was announced until late April 2012. A total of 697 people had won her vocal by 30 July and the vocal was released as a download only on August 5, 2012.
