Kru is phenomenal and very underrated. He inflicts tenacity down on his basic, which is a very useful debuff and not commonly found. Since he inflicts a debuff with his basic and can taunt while using his basic, he has 100% counter, which mean everyone will likely have tenacity down before the end of the first turn since he starts with taunt. He’s always taunting. His stun passes all buffs and lasts for two turns. His focused rage can hit for 50k or more and he’s healed for the entire amount. His leader is ridiculous for First Order. His unique makes him recover health and gives FO advantage, which is extremely useful, especially for someone like foe.
In conclusion, he recovers huge amounts of health from multiple sources, takes reduced damage from percent health effects, has high armor, can hit very hard, inflicts tenacity down, is always taunting, grants advantage when he takes damage, and has a wicked leader.
I’d say he’s pretty dang good.