Hello everyone. I saw in the documentation about monsters that there is a value called "brain". I've tried to assign a spider the brain type "Tentacle". If I try to run the preview, the editor crashes.
Sounds like a science experiment done by some mad scientist: trying to insert the brain of a tentacle into a spider.
But seriously speaking, the different brains have not been designed to be interchangeable. There's a lot of hardcoded limitations and requirements, especially with the more "exotic" cases like tentacle or cube, so things probably won't work if those brains are not used with the original asset. If you want customized behavior from a monster, the best approach usually is to use the monster's scripting hooks.