[quote=Omnial]
Omnial is content withthis idea. though if a boss is rolled we fight it, yes?
[/quote]

Depends upon if its a boss that you haven't faced before. If its another Big Imp or Mass Zombie, then it will be Auto-Resolved (with Death being possible for Boss Auto-Resolves, but highly unlikely unless you're fighting alone). If its a new Boss Mob, then yes, it will be fought. Death, again, will also be possible.