FIRST EVER HECTOR

Since he's your first Hector, DO NOT FODDER HIM HE'S AMAZING. Besides those IV's aren't that bad anyway, it doesn't lower his defense and attack which are miles more important than res.

He usually prefers +ATK or +DEF, but the ivs you have are perfectly fine.

Make a +10 unit from 4*s and fodder dc. Hes good but not as good as a merged uinit woth weapon refine and DC. +atk effie w dc, slaying, and glimer is a beast!

Any Hector is good Hector.

There are very few characters in the game that can use DC better than Hector. I'd keep him unless you already had a specific unit in mind. +SPD is a superboon, although he still only gets him to 28. -RES hurts against Reinhardt, but you should still live and counterkill if he's unbuffed.

If you have a highly merged unit that needs DC fodder him off

If you've got a +Spd Hector, go with a windsweep build (if you can). He's at 28 with the boon, which goes up to 38 with the Phantom Speed 3 seal. If you have one Hone Armor buff that goes up to 44 speed. If you have two other goad armor buffs on him that goes up to 52 effective speed.

With that (or even most of that) he will be able to initiate on nearly any melee unit in the game without taking any damage. Note that no damage I just said. This keeps his Quick Riposte ability up for the next poor sap to initiate on him and take an Armads to the face. Also, he'll probably have his special charged up. If you at all can put this together, I think this is one of his better builds, and will take quite a lot of people by surprise in the arena.

https://www.reddit.com/r/FireEmblemHeroes/comments/6pf4t2/windsweep_hector/

My Hector is +spd -res. As you can see, he’s still strong enough to kill a Yak from miles always with mind bullets.

As TG15 said, any Hector is good Hector.

+spd is quite underrated, imo. Keep him.