That site with the Puppetmaster picture wrote:
At Develop Panel which ends some time ago
Finally アトルガン additional job third feature
The "mechanism loyal retainer" became announcement!
As for details at official sight each media being to introduce in the next few days
Just please wait already a little!
They should have called it the Mechanism Loyal Retainer, that sounds way cooler... Mech Retainer. There you go. Everything's all better now.
So, what's this job do? /interested.