Ulrik

OMG, seriously. This guy is a beast. Not only does his troop skills boost all fighter stats, in campaign and duel modes he is just a super tank.

Although his main Troop skill Destiny Bond is slow, it can be forgiven based on his other three skills. If his main skill was fast or even normal Ulrik would be the most broken hero. Strangle Reduces all foes’ DEF by almost half. Might gives Ulrik and inconceivable 20% dodge, and and Towering Body increases all allies’ DEF by 63%.

If you put him in the front he will most certainly soak up a lot of damage. A top-tier hero, there is excuse not to use him, especially since he is so easy to get.