Wow, MD is the Destroyer of worlds. Who's your hidden gem of a merc?

[Katheb]

I trained his marksmanship a bit, gave him a heavy machine gun... Plant him prone and watch anything in his over-watch zone briefly regret being there, before dying horribly.

He even started to say things like "If I heal him now, he may survive... but that's not the point is it?"

What have I unleashed?

PS: Barry is a legend, his explosive skill has saved me many times over. Livewire's Enemy reveal skill is awesome. Buns and her sniper rifle, I don't need to say any more do I?

Who's your go to team, and why are they awesome?