They can also be "brought to life", but that wil be later, in the advanced tutorials section. But until then, here is how to "freeze" monsters:
1. Create the monster thing
2. Open his properties
3. Swicth all of his charcertists like so:
*All difficulties ON
*deaf ON
*dormant ON
*fighter ON
*cleric ON
*mage ON
*Single/coop/deathmacth ON
Now he is frozen, never to be awoken, untill i get off my lazy butt and write another tutorial ^_^