This is a ranking page for the hero Byleth - Proven Professor from the game Fire Emblem Heroes (FEH). Read on to learn the best IVs (Individual Values), best builds (Inherit Skill), weapon refinement, stats at Lv 40, and more for Byleth (F).

Heroes With the Same Name
Byleth (F)	Byleth (M)
Summer Byleth (F)	Legendary Byleth (M)
Legendary Byleth (F)	Brave Byleth (F)
Sage Byleth (M)	Fallen Byleth (F)
Winter Byleth (M)

Mythic Heroes - Mythic Heroes - Líf Featured Heroes
Líf [9.0/10]	Legendary Eliwood [9.0/10]	Byleth (F) [9.0/10]	Legendary Ephraim [8.5/10]
Legendary Lucina [9.0/10]	Picnic Lukas [8.0/10]	Legendary Hector [9.0/10]	Yune [9.0/10]
Hilda [8.5/10]	Loki [9.0/10]	Caineghis [9.0/10]	Legendary Leif [9.0/10]

Byleth (F) Rating and Basic Information

Overall Rating	9.0/10
Reroll Ranking (excluding Inherit Skill)	S (▶Reroll Ranking)
Ranking (including Inherit Skill)	S (▶FEH Tier List)

Byleth - Proven Professor: Basic Information

Color / Weapon Type / Move Type	Red / Sword / Infantry
Rarity	5 Star
What Kind of Character Are They?	・Exclusive weapon has the effects of Null Follow-Up ・Has a special that deals additional damage to dragons and beasts ・Can nullify enemy skills that alter cooldown count of unit or the foe

Byleth (F) Skills at 5★

Creator Sword Might: 16　 Range: 1 Accelerates Special trigger (cooldown count-1). During combat, disables foe's skills that guarantee foe's follow-up attack or prevent unit's follow-up attack, and neutralizes skills that grant "Special cooldown charge +X" to foe or inflict "Special cooldown charge -X" on unit.

Ruptured Sky Cooldown Count = 2 Boosts damage by 20% of foe's Atk. If in combat against a dragon foe or beast foe, boosts damage by 40% instead of 20%.

Fury 4 Grants Atk/Spd/Def/Res+4. After combat, deals 8 damage to unit.

Wrath 3 If unit’s HP ≤ 75%, Special cooldown count -1 at start of turn if Special triggers by attacking. If Special triggers, +10 damage from Special.

Even Atk Wave 3 At start of even-numbered turns, grants Atk +6 to unit and adjacent allies for 1 turn. (Bonus granted to unit even if no allies are adjacent. )

Byleth (F) Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (18)		★★☆☆☆
Atk (26)		★★★★★
Spd (10)		★★★★☆
Def (7)		★★★☆☆
Res (4)		★☆☆☆☆

◯ = Stat gains +4 with a superboon, ✕= Stat goes down by -4 with a superbane, - = No assets or flaws

See the IV Checker for All Units

Trait Fruits—How to Change IVs

When using an Ascendant Floret, we recommend getting the next superboon if it fits the hero. If not, consider what stat your hero needs most.

+Atk/-Res

Byleth's best IVs are +Atk and -Res. Byleth has such high Spd that follow-up attacks are extremely easy to come by, so maximizing the damage output is the way to good. If you want to ensure she gets a follow-up attack when going into battle, Spd is a superboon, making it a a good asset as well.

Byleth (F) Best Builds

Windsweep Byleth (F)

HOT
： Creator Sword ： Reposition ： Ruptured Sky ： -	： Swift Sparrow 3 ： Windsweep 3 ： Joint Drive Atk ： Blade Session 3 ： -

How to Use, Explanation

This is a Windsweep build for Byleth (F). Due to her weapon's effects and her high stats, she can easily activate Windsweep and prevent her opponent from counterattacking.

Galeforce Sprial Byleth (F)

HOT
： Creator Sword ： Reposition ： Galeforce ： -	： Swift Sparrow 3 ： Special Spiral 3 ： Joint Drive Atk ： Flashing Blade 3 ： -

How to Use, Explanation

This is a build based around inheriting Swift Sparrow and Special Spiral. By making use of her high Spd stat and equipping Flashing Blade to maximize her attack ability, she can safely trigger Galeforce. When Special Spiral is unavailable to you, Wings of Mercy is a great substitute.

Budget Byleth (F)

： Creator Sword ： Reposition ： Ruptured Sky ： -

： Fury 3 ： Wrath 3 ： Even Atk Wave 3 ： Quickened Pulse ： -

How to Use, Explanation

This is a low investment build for Byleth (F). Since her default skills are already amazing, equipping her with an assist like Reposition and seal like Quickened Pulse is enough to make her ready for battle.

Source Heroes for All Skills

Byleth (F) Best Weapon Refine

Byleth (F)'s Refined Weapon

Exclusive Weapon Effect from Refining (Special Effect Type)
Creator Sword	SP: 400
Might: 16　Range: 1　HP: 3 Accelerates Special trigger (cooldown count-1). During combat, neutralizes effects that guarantee foe's follow-up attacks, prevent unit's follow-up attacks, grant "Special cooldown charge +X" to foe, or inflict "Special cooldown charge -X" on unit. If unit initiates combat or is within 2 spaces of an ally, grants Atk/Spd/Def/Res+4 during combat. At start of combat, if unit's HP ≥ 25%, grants Atk/Spd/Def/Res+4 to unit and reduces damage from foe's first attack by 30% during combat. If Special triggers, neutralizes "reduces damage by X%" effects from non-Special skills (excluding area-of-effect Specials). ：500　：200

We recommend the Special Effect Refine for Creator Sword

Creator Sword grants bonus stats, Special cooldown reduction, Tempo, and Null Follow-Up effect during combat.

It also grants damage reduction of 30% while neutralizing damage reduction skills when her Special skill triggers.

Byleth (F) Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
168
HP	40	Rank: 489/1184
Atk	34	Rank: 836/1184
Spd	40	Rank: 309/1184
Def	33	Rank: 346/1184
Res	21	Rank: 949/1184

Stat Values

Lv 40+10 Stats (5★)

	HP	Atk	Spd	Def	Res	Total
+10 Merges W/ Skill Bonuses	45	59	49	41	29	223
Lv.40 +10	45	39	45	37	25	191

Stats at Lv 40

	HP	Atk	Spd	Def	Res	Total
5★- Adjusted for Skills	40	54	44	37	25	200
5★ Lv.40	40	34	40	33	21	168

Initial Stats (with Skills)

	HP	Atk	Spd	Def	Res	Total
5★ Lv.1	18	26	10	7	4	65

Stat Comparison of Similar Heroes

Hero	HP	Atk	Spd	Def	Res	Total
Aided Dagr	41	46	48	38	31	204
Brave Felix	40	47	48	35	29	199
Ogier	46	44	47	36	24	197
Severa	42	43	47	37	24	193
Brave Robin (M)	40	46	45	35	27	193
Inigo	40	44	45	34	30	193
Emblem Marth	41	45	47	33	27	193
Fallen Lloyd	41	43	46	31	32	193
Edward	40	43	46	43	21	193
Kagetsu	42	43	47	35	25	192
Lapis	41	41	45	29	32	188
Summer Fjorm	43	43	46	28	28	188
Fallen Byleth (F)	40	44	47	32	25	188
Felix	40	46	46	31	25	188
Alear (F)	40	43	46	32	26	187
Alear (M)	40	44	45	33	25	187
Ascended Fir	42	44	46	34	21	187
Lucia	40	41	45	29	32	187
Lumera	43	43	43	33	25	187
Ascended Mareeta	40	40	43	34	25	182
Galzus	40	43	41	36	22	182
Yen'fay	43	37	42	32	28	182
Priam	40	41	40	35	26	182
Malice	40	39	43	32	28	182
Brave Marth	41	41	43	32	25	182
Kamui	44	38	41	36	22	181
Flavia	41	40	41	36	23	181
Duo Eirika	40	36	43	30	28	177
Ninja Zihark	43	37	42	30	24	176
Catherine	43	39	41	30	23	176
Kris (M)	40	37	40	30	25	172
Say'ri	40	35	40	23	34	172
Young Marth	41	36	37	32	26	172
Larcei	41	36	40	30	25	172
Mareeta	41	35	42	31	23	172
Fallen Mareeta	42	33	41	29	23	168
Byleth (F)	40	34	40	33	21	168

Note: Stats bonuses from skills are not taken into account.

Byleth (F) Roles, Strengths, and Weaknesses

Byleth (F) Roles

Byleth - Proven Professor Roles
Close-Physical	Ranged-Physical	Close-Magic	Ranged-Magic
Physical Wall	Magic Wall	Effective Weapon	Movement Assist
Exclusive Skill	All-Range Counter	Recovery	Refresher
Legendary	Mythic	Duo / Harmonized	Resplendent

F!Byleth is a close ranged physical attacker (range = 1). Therefore, when not accounting for the Weapon Triangle, the amount of damage she deals will be equivalent to her Atk minus the foe's Def stat.

Byleth (F)'s Strengths

Exclusive weapon has Null Follow-Up built into it

F!Byleth's exclusive weapon skill, Creator Sword, has the effect of Null Follow-Up. This will allow her to reduce the damage taken from foes with skills like Bold Fighter and Quick Riposte, and will also allow her to make a follow-up attack even against foes with the skill Wary Fighter.

Can neutralize skills that change special cooldown

Creator Sword will also prevent any enemy skill from slowing down or speeding up a special's cooldown or speeding up. This means that she can nullify Flashing Blade or Heavy Blade and use her special without being affected by Special Fighter or Guard.

Low cooldown special that is effective on dragons and beasts

Her special skill Ruptured Sky will boost damage by 40% of a foe's Atk if they are a dragon or beast. When her HP drops to 75%, Byleth will be able to use the effects of Wrath and Ruptured Sky together to get a guaranteed special, which lets her deal heavy damage to characters like Tibarn or Duma.

Byleth (F)'s Weaknesses

Weak to magic attacks

With her low Res stat, F!Byleth will take a lot of damage from mages and dragons. Keep her out of reach from powerful blue mages like Reinhardt and Ophelia.

Should you Unlock Potential?

Should You Unlock Potential for this Hero?	Cannot Unlock Potential

Byleth - Proven Professor Only Appears as a 5 Star Hero!

Byleth - Proven Professor only appears as a 5 Star Hero. We will include whether or not you should Unlock Potential for Byleth - Proven Professor if a 4 Star version is released!

Unlock Potential Tier List

Byleth (F) - List of Skills

Weapons

Skill Name	Might	Range	Effect	Learned At
Iron Sword	6	1	No Effect	5★
Steel Sword	8	1	No Effect	5★
Silver Sword	11	1	No Effect	5★
Creator Sword	16	1	Accelerates Special trigger (cooldown count-1). During combat, disables foe's skills that guarantee foe's follow-up attack or prevent unit's follow-up attack, and neutralizes skills that grant "Special cooldown charge +X" to foe or inflict "Special cooldown charge -X" on unit.	5★

Assists

This Hero has no Assist skills that can be learned.

Specials

Skill Name	Effect	Learned At
Dragon Gaze	(Cooldown Count = 4) Boosts Atk by 30%.	5★
Draconic Aura	(Cooldown Count = 3) Boosts Atk by 30%.	5★
Ruptured Sky	(Cooldown Count = 2) Boosts damage by 20% of foe's Atk. If in combat against a dragon foe or beast foe, boosts damage by 40% instead of 20%.	5★

Passives

Skill Name	Effect	Learned At
Fury 1	Grants Atk/Spd/Def/Res +1. Unit take 2 damage after combat.	5★
Fury 2	Grants Atk/Spd/Def/Res +2. Unit take 4 damage after combat.	5★
Fury 3	Grants Atk/Spd/Def/Res +3. Unit take 6 damage after combat.	5★
Fury 4	Grants Atk/Spd/Def/Res+4. After combat, deals 8 damage to unit.	5★
Wrath 1	If unit’s HP ≤ 25%, Special cooldown count -1 at start of turn if Special triggers by attacking. If Special triggers, +10 damage from Special.	5★
Wrath 2	If unit’s HP ≤ 50%, Special cooldown count -1 at start of turn if Special triggers by attacking. If Special triggers, +10 damage from Special.	5★
Wrath 3	If unit’s HP ≤ 75%, Special cooldown count -1 at start of turn if Special triggers by attacking. If Special triggers, +10 damage from Special.	5★
Even Atk Wave 1	At start of even-numbered turns, grants Atk +2 to unit and adjacent allies for 1 turn. (Bonus granted to unit even if no allies are adjacent. )	5★
Even Atk Wave 2	At start of even-numbered turns, grants Atk +4 to unit and adjacent allies for 1 turn. (Bonus granted to unit even if no allies are adjacent. )	5★
Even Atk Wave 3	At start of even-numbered turns, grants Atk +6 to unit and adjacent allies for 1 turn. (Bonus granted to unit even if no allies are adjacent. )	5★

Byleth (F) as a Source Hero

Value of Skills	★★★★★

Inheriting Ruptured Sky or Fury 4

You may want to use F!Byleth to inherit Ruptured Sky or Fury 4. However, as Byleth is a very useful hero, we recommend you keep at least one before foddering off a duplicate.

▶Source Heroes for Skills
▶Source Heroes Tier List

How to Get Byleth (F) / Illustrations / Voice Actor / Quotes

How to Get Byleth (F)

Obtain Through Regular Summon

Byleth (F) is a Hero who can be pulled from any summon.

Note: Not currently a featured hero in any Summon events.

Current Focuses and Which You Should Pull From

Voice Actor and Illustrator Information

Voice Actor (English)	Jeannie Tirado
Illustrator	廣岡政樹
Appears In	Fire Emblem: Three Houses

Illustration

Quotes: Special Triggered

Special Triggered Quotes are voice lines that play upon activating a Special attack.

Lv 40 5★ Dialogue

Lv 40 5★ Dialogue become available when a hero attains Lv. 40 at 5★ rarity.

FEH: Related Guides

Mythic Heroes - Mythic Heroes - Líf

Heroes from Mythic Heroes - Mythic Heroes - Líf
Líf [9.0/10]	Legendary Eliwood [9.0/10]	Byleth (F) [9.0/10]	Legendary Ephraim [8.5/10]
Legendary Lucina [9.0/10]	Picnic Lukas [8.0/10]	Legendary Hector [9.0/10]	Yune [9.0/10]
Hilda [8.5/10]	Loki [9.0/10]	Caineghis [9.0/10]	Legendary Leif [9.0/10]

See All Red Heroes

▶︎Return to the Red Heroes Page

All Types of Red Weapons

Close-Range	Ranged
Sword	Red Tome
Red Breath	Red Dagger
Red Beast	Red Bow