Mikuo Hatsune

Mikuo Hatsune (初音ミクオ Hatsune Mikuo) is a popular genderbend of Hatsune Miku.

History
Mikuo came to be as a result of extreme downpitching of Miku's songs, and possibly a desire to have Miku sound masculine. His visual characteristics followed soon after.

He often portrayed as Miku's twin brother or her older brother.

Voice Configuration
Having a history of being a mere Pitchloid, Mikuo was not easy to tune for Vocaloid; sometimes he still has hints of Miku's voice characteristics, or doesn't sound convincingly masculine.

Esrael has made a voice configuration for Mikuo. The sole purpose of the configuration was to generate a decent male voice for choral works. Therefore, the voice may sound too deep to fit Mikuo's aesthetics.

Another configuration by Crossfrown, designed to fit Mikuo's aesthetics.

Append
Soft, Sweet, Dark, Vivid, Solid, Light

Notable Songs
The following songs were created by configuring Miku's voice in Vocaloid, not by merely downpitching existing songs.

みくおみくおにしてあげる/Mikuo Mikuo ni Shite Ageru
Original music and lyrics by ika Mikuo's version of Miku's ”title” song Miku Miku ni Shite Ageru.
 * NicoVideo broadcast
 * Youtube Broadcast

Ylioppilaslaulu (in Finnish)

 * YouTube broadcast (with English subtitles)

Hatsune Mikuo sings the national anthem (1833-1917) of Imperial Russia
Examples of Esrael's configuration in action.
 * YouTube broadcast (with English subtitles)

線香花火/Senko Hanabi
Music and lyrics by anemomania An original Mikuo song by a Japanese YouTuber called anemomania.
 * YouTube broadcast

Border Line
Original music and lyrics by Aria-P

An original song by Y / Aria-P.
 * NicoVideo broadcast

Peace Maker
Original music and lyrics by Aria-P An original song by Y / Aria-P. In this song, Mikuo is a soldier. He sang about his lover (Miku) and his mission to destroy the 'yellow diva' (Rin). In the end, Mikuo was killed by a boy (Len) for revenge.
 * NicoVideo broadcast
 * YouTube broadcast

LIGHT
Original music and lyrics by Y An original song by Y. In this song, Mikuo is shown to be a 'bug' in Miku's voicebank. The Master of the computer wants to update the voicebank so no 'bugs' will be seen ever again. This song is about Mikuo spending his last moments with Miku before his 'deletion'.
 * NicoVideo broadcast
 * YouTube broadcast

Trivia

 * Mikuo is among the first generation of Fanmade Vocaloids that are what today are called Pitchloids.
 * Mikuo sports the same outfit as Miku, with the exception of wearing pants instead of skirt. However, he may wear a polo instead of sleeveless shirt.
 * No one truly knows who first coined Mikuo.
 * Mikuo's birthday is August 31st, 2007, making him officially 3 years old as of August 2010. Though he is designed as a 16 year old boy.
 * Mikuo's character item is a leek, the same as his sister Miku.
 * Mikuo usually paired with Kagamine Rin, Luka, Akaito, Kaiko, Miku, Luki(Luke), and Meito. The most popular yaoi pairing is Mikuo and Akaito, or Mikuo and Len. While the most popular straight pairing is Mikuo and Rin.