Originally Posted by JMich

They do show up in your battles (you only see your battles and those your friends requested support from you), and if you have been offline for a bit, you also get a Nutaku message, which may result in an email as well, depending on your Nutaku settings.

What I meant was before I start a battle I would see battle list on screen but, inside of battle list you would see something like Mega Boss Outbreak. My question is are they asking me to help attack her?

Originally Posted by rites

My question is are they asking me to help attack her?

If you see a boss you didn't encounter yourself, someone is asking for help. So feel free to attack them.