Kaiserliche Beschützer

"So it looks like they've made the Kaiserliche Mauswachen, a rank that's been made by the Werman Reich in order to quietly assassinate the desired targets that the Werman Reich has designated to in order to protect its loyalty in a non-lethal way. I guess Corvo, Ezio and many other assassins would've know that better."

--Su Ji-Hoon, The Backstabber

A Kaiserlicher Mauswachen is an imperial royal rank made by the Werman Reich so that only smart or defensive mouseman would become part of Werner Werman so that they would be the ones to have professional skills of an assassin with an ability to perform stealth attacks and assassinate enemies in order to protect its royalty and its kaiser, Werner Werman..

Also, it means an "Imperial Mouse Guard" in German so that only Werner Werman and his army can choose it to become part of a newly-made imperial royal rank in order to protoect the Werman Reich.

One of the named Kaiserlicher Mauswachen is Bastian Fertig, a mechanic mouseman who is serving for the Werman Reich, but there were a lot of Kaiserliche Mauswachen out there to be known throughout the story, but he also is a good assassin like Corvo Attano himself.

Now it can only be used to be able to be knighted and/or chosen to become part of the Werman Reich to become assassins, and any mouse character might be a Kaiserliche Mauswachen.

It is only available in Inkwell Isle.