Gumi

GUMI is an official mascot character of Megpoid which is a singing synthesizer application software powered by Yamaha's Vocaloid2 and was published by INTERNET Co.,Ltd. The avatar character of the software drawn by the illustrator Masami Yuuki. Gumi was the next Vocaloid to be released from Internet Co., Ltd and had a more retro-futuristic approach than Gakupo had. The name GUMI is from the voice provider Megumi Nakajima's nickname in her childhood. The software name of "Megpoid" is taken from the provider's name "Megumi". The name of "poid" on the end of the name is short for "like Vocaloid", the full implied name of this product is "Megumi-like Vocaloid".

(Source: Vocaloid Wikia)