I currently have a +2 with +Spd -HP, but it's a pretty outdated spread with his refinement. Now I have a +HP -Spd and a +Res -HP one I can upgrade and merge him into, but not quite sure which to go with.
The build I have on him is:
Binding Blade +Eff
Reposition
Aether
Distant Counter
Wrath
Infantry Pulse
Summoner Support
It's mainly the Infantry Pulse that makes me question whether I should go with the -HP or +HP, and he doesn't necessarily need the speed anymore, but he does appreciate the extra res.
Considering his weapon refine I recommend to have him go with +res -hp cause in the community Hp is the useless stat and with +res he'll take less damage from magic to compensate for the -hp.
Right now Roy is definitely an enemy phase dragon slayer so +res is the way to go.(IMO atleast)
Pokemon GO
Fire Emblem Heroes
Fate Grand Order
Dragonball Legends
Dragalia Lost
IV Calc
Heroes