The danger rectangle reminds me of those scenes in games and movies with air fights where you are trying to lock your enemy to shoot a missile. :-D
Yes, I can see why usually it got this effect when multiple creatures of this type are on screen.
I was aiming to make something fresh regarding strategy creature design.
And as you can see they are pretty easy to kill if you have more squad members, but if I were to combine these creatures with additional zombies or other monsters then this could be a nightmare scenario for the player