Roy

40+3
The eff Binding blade gives Roy a much more powerful Quick Riposte activating at 50% HP or higher instead of 70% and allow it to be effective against dragons. To fully utilize this ability, Distant Counter helps. Despite the fact he starts with Triangle Advantage, he has good defenses in both Def and Res. The seal will greatly help his res. Vantage will allow Roy to counter better if he is too low on health. Def ploy is more effective than most other physical units due to his high res. Sol for survivability, shove because whatever. His speed lets him not get doubled as much his attack is on the low side however.

[ roy's our anti-range boi ]
made specifically to be able to counterattack ranged units.
im still working on this build as i believe theres a lot that can be done in order to perfect it :^)
the aim of this build is to be able to make him a good offense unit while being able to deal with ranged units as well,,,

Roy has been a unit that has historically been renown for being terrible, and in heroes he used to be no different. He has many middling stats which means he finds it hard to fill a role that someone cant fill better much than him. However, Roys Binding Blade allows him to be run as one of the most versatile infantry tanks in the game. Due to this, he has a variety of builds for different situations/modes.

IVS: Best ivs are +Def/+Atk -HP
I recommend +Def-HP to allow him to work much better as a physical tank when he needs to (along with it being a superboon). Unless hes planned on being run solely as a dragon counter hes best off with these ivs. +Atk-HP also works well with his QR5 refinement adding to his total dmg on retaliation. Since Roy has decent bulk his HP is much less important to him than his other stats.

Weapon: His weapon is choice is obvious. Binding Blade gives him +4/4 in both defenses when attacked, QR5, 16 might, and effectiveness against dragons.

Special: This is flexible. Aether allows him to deal damage, while also keeping him healthy. For a typical damage special Moonbow and Ignis both work great.

These next spots change based on the enemy you expect Roy to face.

Dragon/Mage Counter:
A Slot: Warding Breath/Distant Counter. With Warding Breath Roy is able to charge his special much faster and counter dragons (all melee really). You are able to better tank mages with this and adds a win on a non-triangle adept Nowi. Use Distant Counter if you are planning to use DD3 to apply QR5 onto attacking mages.

B Slot: Cancel Affinity. Nowi now frequently runs Triangle Adept and Sword Breaker to counter Falchion users. Even with Warding Breath you will still lose this match up, but with Cancel Affinity it goes back to Roy. You are even allowed to run Distant Counter and still win the match up if you have this ability though you will have to either debuff/buff or run CD in your C slot. If the Nowi isnt +Atk you beat her with just Cancel Affinity checking her..

C Slot: Atk Smoke/Flexible. Builds on Roys defenses making it easier for him to tank multiple threats. He can run just about anything here as long as you have a plan.

Seal: Distant Defense/Close Defense. Close Defense is run only if you want to counter Dragons and have a few more options against melee units. Run Distant Defense if you plan on facing mages.

Sword/Axe Counter:
A Slot: Steady Breath. +4 Def and charging his special faster gives him the best results by far.

B Slot: Swordbreaker/Guard. Roy is very susceptible to taking special hits as he relies heavily on his QR5 refine to add up wins which is where Guard comes in handy. A budget option that does almost as well is swordbreaker which will help him duel quite a few units better.

C Slots: Atk Smoke/Flexible. Same as the other.

Seal: Close Defense. Adding onto his bulk is vital as his numbers are not naturally very high.

Roy can also run a mix of these abilities so don't be afraid to get creative. He is a lot of fun to use if you know how to play around your weaknesses. I also highly recommend running him with Summoner Support as he is a unit who utilizes every stat available to him. With a +Def iv he has 29/28 defenses. Summoner Support increases it to 31/30. His weapon further moves it to 34/35. Merging him it goes up to 39/38 and he still has every slot open to increasing that further.

Hope this helps for those with Roy questions!

My Roy may have higher stats than yours due to him being lvl 40+7. This Build is made to create a Tank from Roy. His binding blade with Defense will allow him to take hits taking little to no damage from green and red units. Using Death Blow 3 you allow him to gain 6 Attack when he attacks and when he defends he has Close Defense 3 which gives him 6 defense/ resistance when attacked. It may also be beneficial to have other units around using Rally Defense, Hone Attack 3 and Fortify Res 3. These will bring the most out of Roy's stats. Along with these comes Aether. Aether is very helpful as it can be used to take out other units who boost their defense by reducing it by 50 percent and then recovers half of that damage dealt. Vantage is used for when low on health Roy plays the bait game. When lower than 75% health he attacks before his enemy attacks. He does major damage with his high attack and since most people use skills that activate when you attack them this will neutralize those skills due to you not initiating combat but still attacking first. This Build allows you to take down Tanks, Dragons, and standard infantry much easier

I Will Not Lose! (Dual Phase Debuffer)

This build works with almost any IVs but +Atk /-HP is preferred for maximum damage output. The goal is to have Roy tank or kill an enemy, debuff surrounding enemies then follow up with a potential Wrath-Aether nuke at the start of the next turn.

Roy's weapon refine allows him secure doubles on Enemy Phase. With +4 to his middling defenses, he should be able to withstand an attack and be in Brazen and Wrath range after one round of combat. An HP bane helps Roy reach below the required threshold both skills.

If conditions are met, Roy will have an effective +7 Atk, +14 Def, +7 Res (+18 Def and +11 Res) and +7 Spd thanks to Atk & Spd Smoke. - Not taking into account comrade buffs.
With the added Atk, Roy can finish off his initial opponent (if they survive the first round) and have a Wrath powered Aether ready for Enemy Phase. Rinse Repeat.