[Lonestar]

I don't think Black Beasts needs to be changed considering that they're pretty easy and predictable to fight against, Black Roar hits on around 50~40 per roar, and they get shitted at for everything except Water/Earth. (Specially Fire.) Dark Calling is just a teleport, not the real attack, and the basic attacks after Black Roar is hella easy to dodge.
Plus, in your example:
- They wouldn't Black Roar the gunner twice per beast, they only do it once until the Fear wears out, which is time enough for the Black Knight and the Gunner to take 'em down.
- They will try to basic attack the gunner, which for a Rogue/Gunner, they shouldn't have problem in dodging it.
- The only problem is the Black Knight taking the damage, but he's there for that same reason.
I just find this unnecessary, but that's my opinion anyways.