Lex from Sun God’s Wrath is somehow simultaneously miserable to use and incredibly awesome to use.
He’s an early game archer with poor bases and horribly lopsided growths (he basically only has 90 hp and 50 str to speak of), and while that can be offset with the crusader scrolls that’s a waste on him.
See, he’s an archer with Counter, which means 1.) he’s an archer he gets soft provoke and 2.) he will do so much reflection damage from huge hp and jack shit def/res. He can do chip, lure, and cleanup. Not too impressive until… he gets Galeforce. Relatively early, too; he usually gets it by Chapter 4.
This means he’s pretty reliable to mop up an enemy then chip one for a higher move unit to finish off. It also means he’s gonna get boatloads of exp as long as you deploy him.
Now, at level 14, his next big power spike, he gets Double Lion, which when combined with his huge str stat and Galeforce means his low spd is no longer an issue, and if he can double an enemy from 3 range he’s gonna kill 'em.
Finally, there’s his promotions. Sniper gives him some 1.5x proc damage boost, whatever. What matters is that his T3 is piss easy to reach (he caps level like 10 chapters before the final one I swear) and it’s Bow Knight. He gets Canto, 9 move, stupid high damage output from 2-3 range, and Galeforce. Send him in to instantly obliterate a key objective and/or lure in a high risk enemy that you can blow up next turn.
It’s just really oddly satisfying to play with his curve of usefulness/power. And it helps that his ability to attack from range and to proc Galeforce is nigh indispensable for doing well on that one Survive map really early (which is when, in other games, you decide you don’t wanna bother with your crap ass early game archer).