MM pets as an enemy group

[KalSpiro]

I know there are a handful of missions that make use of MM pets, specifically the Robots.  I thought this was an option in AE, but while I can find individual pets as an option for captives, I'm not finding them anywhere for enemy groups.  Is this a thing?  What I'm trying to do would not look right or work properly if I just used some Robot MMs and ran them loose.

[Ankylosaur]

The only other thing you can do with them is use them as a boss - choosing them from the Pets group.

 

They are not available to add to a custom group.