I haven’t released this on my coding thread yet as I’m still adding more to it, but controlling enemies is one of the options in my debugger. Press B on a unit to view the menu, and enable global flag 0xEC to disable it from working.
To install on a rom:
Download this folder:
https://github.com/Veslyquix/ASM/tree/main/Debugger
Febuilder → advanced menus → insert ea → installer.event
Or if you just want to try it, I’ve put it on my fe8 self rando.