In pictures that I've seen, there are always two party member and two monsters. So I'm thinking that you either never get the chance to be alone and test it, or, you need two party members in case the monsters go berserk.
Which brings up another question, well, two questions. Wouldn't it be cool if at some point, the monsters stop listening to you, and become enemies once more? Also, how the hell do you get them to listen to you? My second question is, can you revive the monsters if they die? Like, with spells such as ressurection or Life Bottles? Or will they be assholes and dissapear?
Main Character : No! Monster! Don't die! We have a magician that can cast resurection and we have lots of life bottles! Let us help you!
Monster Ally : Lul no. (Dissapears)