Talk:Hero (Version 3)/@comment-27076522-20171229070559

Make sure to implement the Genki system, which Hero is a part of. You can equip this Hero to the upper right hand slot in your team (so long as Hero v1 or V2 isn't already in your team) and at the very last wave, Hero v3 will come out for 20s as an additional unit, and also won't take damage for that time.

So basically, he comes at the end as a meatshield aura unit. Pretty useful, actually, but him in a main team isn't really very good.