A masked hip-hop unit that suddenly appeared in 2005. All members are named after three-digit numbers. Using characters drawn by up-and-coming illustrator Steroid as their main image and alter ego, they release CDs in conjunction with the story progression on their website. Furthermore, participating artists are character-ized and exist within the world of MIDICRONICA, resulting in a media mix project operating under the unprecedented concept of expanding their members. "sanfrancisco," included in their 1st album "#501," was used as the ending theme for the final episode of the anime "Samurai Champloo," and the album sold out, fetching high prices of around 40,000 yen at certain auctions. Subsequently, their music has been digitally distributed worldwide (to over 500 sites domestically and internationally), receiving favorable reviews in the United States and France. In September 2009, they were one of the first domestic artists to release an iPhone-exclusive app, further expanding as a media mix project. They have successively released their 2nd album, mini-album, official bootleg album, member solos, and two remix albums simultaneously. In March 2012, they released a collaboration album with Shin-Ski titled "color". HP: http//www.midicronica.com