no 

i'm planning on making a tutorial but all you have to do is take the model you made for the monster (you can animate it with mixamo) and place it in-game, then in your animation tool, not animator tool, make a new animation, then go to your animator tool, and place in the model with animations into the animator, and set that model as default layer, then in the animation file, set it to loop forever and loop pose, then he should be animated, then place the sussy brain script inside of the monster and set the everything to what ever you would like, then, if you want him to go threw stuff then don't change him, if you want him to collide with things then just give it a box collider, then make the jumpscare a separate animation using the same thing as before without making the jumpscare loop, then make an empty object and name it to "jumpscare", then place the model inside, then on the jumpscare object, place the reset and fade in scripts inside, then uncheck the box in the same place the script were placed to hide it, if you want sounds, then on the chase model, place your sound inside, then make it loop, for the jumpscare do the same except don't make it loop... then you should have a monster.....