My fight against Ymir at BR46 with no stat grinding done and 4 of the 5 unions have less than 2000HP. I summoned Cyclops during this fight and immediately thought I had made an error because i had given Ymir an extra opportunity each round to use Hammerspin, something I was trying to avoid. However, things turned out ok and Cyclops actually gave me the chance to not only get a union flanking but also to get one attacking from the rear.
If you're watching this vid with your kids around then I suggest turning the volume down because I swore really loud at the start of the first turn because I didn't get a Paralyse option! :o)