Silent Zephyrus is a 3rd generation IS developed in England that was stolen by Phantom Task and is currently piloted by M. Its basically an improved version of Blue Tears. It was later modified by Tabane into Kurokishi
1st Shift/Armaments & Abilities
Being more advanced than its predecessor, the Silent Zephyrus boasts superior agility and has 6 shield bits alongside its offensive bits. The controls for the bits alone are difficult enough to deal with, which surprised Cecilia when confronted with the unit the first time, since she took a long time to master her own (in the novel she mentions that M has mastered some unique abilities of the bits Cecilia herself hadn't yet mastered until the Cannonball Fast battle).
In addition to the bits, it is equipped with a high-energy rifle that has a bayonet attachment.
- Star Breaker: a gun capable of using both BT energy and live ammunition.
- Zephyrus is a reference to Zephyrus, the Greek god of west winds.
- From a full body view, the IS resembles a butterfly.
- Vol. 6, Ch. 1, p.1