Miyu

Miyu is the operator of SkullMan.EXE. She owns an antique shop and is a fortune teller who almost always gets her predictions right. She is a recurring character in the anime MegaMan NT Warrior.

Personality
Miyu has a cold, quiet and mysterious personality. She tends to speak mysteriously in the anime and she was the only secret police who never raised Lan or his friends suspicions of her being Miyumiyu. In the game, she uses the words death and dark in sentences.

Game History
Miyu plays a very small role in the games, making her debut in the first MegaMan Battle Network game. She like Masa and Sal, is an optional boss that has no major impact story wise. She works in an antique shop and unlike in the anime, she doesn't show any signs of being able to read fortunes.

She appeared once again in MegaMan Battle Chip Challenge as a challenger, but loses to the playable character.

In MegaMan Battle Network 6, she didn't appear at all. However, she was mentioned by Ms. Mari at the end of the game along with Masa, Sal and other characters, saying that Miyu is congratulating them for graduating Year 6 and moving to middle school. All three of them being mentioned together was possibly a reference to their roles in the anime.

MegaMan NT Warrior
In the anime, she owns an antique shop and could also tell her customers their fortunes. Although her predictions are mostly true, in the last few episodes of the first season, she didn't seem to be able to predict anything. In the anime, she is secretly a Net Agent under the name of Miyumiyu (Mysteriyu in the English dub).

During the N1 Grand Prix arc, Miyu enters the tournament, her first challenger being Lan Hikari. During the fight Miyu uses her skills to predict every move that Lan and MegaMan would make. She was close to winning, but forfeited when Lan found a way to counter her predictions. Despite her loss, it was revealed at the end of the episode that Miyu forfeited on purpose and if she kept battling she would've won. Near the end of the N1 Grand Prix arc, she and Sal were given a chance to reenter in the tournament, but failed due to Maddy and Count Zap sabotaging the machine.

In part 2 of the first season, Miyu seemed to have had a minor personality change. Her predictions doesn't seem to work (as she couldn't predict Ms. Mari fortune), and she even join in dancing and singing contest ironically. She also helps to fight Gospel with SkullMan as a Net Agent alongside Maysa and Sal.

During first season, Miyu displayed many odd behaviors, such as when the whole town was hypnotized by MagicMan.EXE, she was seen behaving like a flying squirrel and during N1 Grand Prix she was seen standing on top of the building during a thunderstorm predicting the battle.

Rockman EXE Beast
In Beast, the normal Miyu didn't appear, however, a Beyondard version of her did. Her Beyondard counterpart has the same personality except for being less mysterious than the original Miyu. Beyondard Miyu also has Skullman.EXE and is also a secret police. Beyondard Miyu was last seen along with Beyondard Sal and Masa witnessing peace being restored to Beyondard. This was the last appearance of Miyu in the series.

Ability
In the MegaMan NT Warrior manga by Ryo Takamisaki, it is revealed that she is capable of "reading the hearts of things" such as antique furnitures, non-electronic and electronic devices, any non-living thing--- including NetNavis. This ability merged with her Navi SkullMan (presumably via Full Synchro), thus letting them predict MegaMan's movement and easily outpower him. However, Miyu can't read the hearts of living things, thus this made her unable to read the heart of Hub residing within MegaMan, which finally led to her defeat at Lan's arrival. Afterwards, Miyu realizes that MegaMan possess a human heart and believes that he will be able to achieve seemingly impossible things, such as defeating the "dark shadow" (Bass.EXE) who lurks in the Undernet.

Trivia

 * She was the only optional boss character from the first game who never appeared in any sequel (not counting MegaMan Battle Chip Challenge).