This is a ranking page for the hero Byleth - Frosty Professors 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 Winter Byleth (M).

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)

Special Heroes - Holiday Lessons Featured Heroes
Winter Byleth (M) [9.5/10]	Winter Edelgard [9.9/10]	Winter Dimitri [9.5/10]	Winter Yunaka [9.5/10]

Winter Byleth (M) Rating and Basic Information

Overall Rating	9.5/10
Reroll Ranking (excluding Inherit Skill)	S (▶Reroll Ranking)
Ranking (including Inherit Skill)	SS (▶FEH Tier List)

Byleth - Frosty Professors: Basic Information

Color / Weapon Type / Move Type	Red / Sword / Armored
Rarity	5 Star
What Kind of Character Are They?	・Weapon skill grants bonus stats to unit during combat, neutralizes effects that slow down unit's Special cooldown charges, de-pulses foe's Special cooldown by up to -3 before combat, and neutralizes effects that prevent unit's counterattacks from ranged foes. ・Exclusive Special skill neutralizes foe's non-Special damage reduction skills, and reduces damage from ranged foe's next attack. ・Duo Skill grants Def/Res+6, 【Hexblade】, 80% AoE damage reduction, and neutralizes armor weakness.

Winter Byleth (M) Skills at 5★

Holy Yule Blade Might: 16　 Range: 1 Accelerates Special trigger (cooldown count-1). Unit can counterattack regardless of foe's range. At start of combat, if unit's HP ≥ 25%, grants Atk/Def/Res+5 to unit, grants bonus to unit's Atk/Def/Res = 20% of unit's Res at start of combat, and neutralizes effects that inflict "Special cooldown charge -X" on unit during combat. At start of combat, if unit's HP ≥ 25%, foe's attack can trigger foe's Special, and unit's Res ≥ foe's Res+5, inflicts Special cooldown count+X on foe before foe's first attack (X = number of spaces from start position to end position of whoever initiated combat, max 3; if unit triggers Savior, value is treated as 3; cannot exceed the foe's maximum Special cooldown). At start of combat, if unit's HP ≥ 25% and foe's Range = 2, neutralizes effects that prevent unit's counterattacks during combat.

Supreme Heaven Cooldown Count = 2 Boosts damage by X% of unit's Atk when Special triggers (if in combat against a dragon foe or beast foe, X = 50; otherwise, X = 25). If Special triggers, neutralizes foe's "reduces damage by X%" effects from non-Special skills. If foe's Range = 2 and unit or foe's Special is ready or triggered before or during this combat, reduces damage from foe's next attack by 30% (once per combat; excluding area-of-effect Specials).

Fireflood Boost 3 Grants HP+5. At start of combat, if unit's HP > 50%, grants Atk/Res+7 to unit during combat, and also, if unit is within 2 spaces of an ally with HP > 50%, inflicts Special cooldown charge -1 on foe per attack during combat (only highest value applied; does not stack).

Weaving Fighter At start of combat, if unit's HP ≥ 25%, inflicts Atk/Def-4 on foe, unit and foe cannot make a follow-up attack, reduces damage from foe's first attack by X% (if foe can make a follow-up attack, X = 80; otherwise, X = 40), and reduces damage from foe's follow-up attack by 40% during combat ("first attack" normally means only the first strike; for effects that grant "unit attacks twice," it means the first and second strikes; likewise, "follow-up attack" normally means the second strike; for effects that grant "unit attacks twice," it means the third and fourth strikes), and restores 7 HP to unit after combat.

A/R Far Save 3 If a foe uses bow, dagger, magic, or staff and initiates combat against an ally with 2 spaces of unit, triggers【Savior】on unit. If unit triggers Savior, grants Atk/Res+4 during combat. 【Savior】 Unit takes ally’s space, enters combat in ally’s place, and receives all after-combat effects. Doesn't trigger if ally is on terrain that unit can't move to or if multiple units are able to use Savior during the same combat. If Savior triggers, after-combat movement effects don't occur.

Winter Byleth (M)'s Duo Skill Effect

Duo Skill

Grants Def/Res+6, "reduces damage from area-of-effect Specials by 80% (excluding Røkkr area-of-effect Specials)," and 【Hexblade】 to unit and allies within 2 spaces of unit for 1 turn. Grants the following effect to unit for 1 turn: "Neutralizes 'effective against armored' bonuses." (Duo Skills can be used once per map by tapping the Duo button. Duo Skills cannot be used by units deployed using Pair Up.)

Standard Effect 1

Duel
If unit is 5★ and level 40 and unit's stats total less than 205, treats unit's stats as 205 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)

Winter Byleth (M) Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (23)		★★★★★
Atk (7)		★★★★★
Spd (5)		★☆☆☆☆
Def (12)		★★★★☆
Res (13)		★★★★★

◯ = 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.

+Res / -Spd

The best IVs for Winter Byleth (M) are +Res and -Spd. Boosting Res improves Byleth's chances of winning the Res check for Holy Yule Blade, de-pulsing his foes before combat to protect Byleth from Special skills.

Winter Byleth (M)'s Spd stat is abysmal at only base 18, and no amount of investment will allow him to outspeed his foes or protect himself from follow-up attack against foes with Null Follow-Up effects. Thus, it is a safe bane to take.

+Res for a +10 Merge

We recommend +Res when merging Winter Byleth (M) up to +10 to ensure he wins the Res check for Holy Yule Blade and increase the Atk/Def/Res he gains with it as well.

Winter Byleth (M) Best Builds

General Use Winter Byleth (M)

HOT
： Holy Yule Blade ： Draw Back ： Supreme Heaven ： -	： Fireflood Boost 3 ： Weaving Fighter ： A/R Far Save 3 ： Atk/Res Ideal 3 ： -

How to Use, Explanation

Winter Byleth (M) comes with a great kit featuring skills that help him protect his allies from incoming attacks, making him an excellent tank for the team, particularly when facing opponents with mages and dragons.

Source Heroes for All Skills

Winter Byleth (M) Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
202
HP	47	Rank: 42/1184
Atk	46	Rank: 45/1184
Spd	18	Rank: 1090/1184
Def	45	Rank: 32/1184
Res	46	Rank: 11/1184

Stat Values

Lv 40+10 Stats (5★)

	HP	Atk	Spd	Def	Res	Total
+10 Merges W/ Skill Bonuses	52	64	22	50	51	239
Lv.40 +10	52	50	22	50	51	225

Stats at Lv 40

	HP	Atk	Spd	Def	Res	Total
5★- Adjusted for Skills	47	62	18	45	46	218
5★ Lv.40	47	46	18	45	46	202

Initial Stats (with Skills)

	HP	Atk	Spd	Def	Res	Total
5★ Lv.1	23	23	5	12	13	76

Stat Comparison of Similar Heroes

Hero	HP	Atk	Spd	Def	Res	Total
Attuned Hector	48	49	17	48	45	207
Winter Byleth (M)	47	46	18	45	46	202
Halloween Kellam	48	46	31	48	27	200
Valentine's Hana	40	42	46	41	27	196
Winter Manuela	42	37	42	38	31	190
Summer Edelgard	46	45	17	43	39	190
Halloween Hector	47	41	26	39	27	180
Winter Zephiel	48	38	19	38	36	179
Valentine's Ike	45	37	38	35	19	174
Zelgius	46	36	33	38	21	174
Black Knight	48	34	34	35	18	169
Draug	50	30	32	39	18	169
Arden	60	36	16	41	16	169
Zephiel	55	35	16	38	24	168

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

Winter Byleth (M) Roles, Strengths, and Weaknesses

Winter Byleth (M) Roles

Byleth - Frosty Professors 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

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

Winter Byleth (M) Strengths

Holy Yule Blade has built-in Distant Counter, de-pulses foes pre-combat and has half-Tempo

Winter Byleth (M)'s exclusive weapon Holy Yule Blade has a built-in Distant Counter effect, allowing him to counterattack against ranged foes.

In combat, Holy Yule Blade grants Byleth Atk/Def/Res+5, an additional Atk/Def/Res bonus equal to 20% of his Res, and neutralizes effects that slow down his Special cooldown charges during combat.

If Byleth's foe has an offensive Special skill and Byleth wins a Res check, Holy Yule Blade inflicts a Special cooldown count penalty of up to -3 based on the number of spaces moved by the unit initiating combat, and is automatically -3 if Byleth triggered a Savior effect.

Finally, Holy Yule Blade also neutralizes sweep effects from ranged foes, allowing him to counterattack against ranged foes that prevent his counterattacks such as Legendary Hinoka.

Supreme Heaven neutralizes non-Special damage reduction

Winter Byleth (M)'s exclusive Special Supreme Heaven is a new skill in line with the typical Byleth Special, dealing bonus damage against beasts and dragons.

Triggering Supreme Heaven neutralizes foe's non-Special damage reduction effects, and if Byleth is facing a ranged foe and either his or his foe's Special is ready or already triggered before or during combat, Supreme Heaven reduces damage from his foe's next attack by 30%.

Non-Special damage reduction effects are very common in today's metagame, and triggering Supreme Heaven neutralizes a key component of current top metagame units, allowing Byleth to heavily dent his foes.

Duo Skill reduces damage from AoE Specials and grants Hexblade

Winter Byleth (M)'s Duo Skill grants Def/Res+6, 【Hexblade】, and 80% damage reduction against area-of-effect Specials to himself and all nearby allies for 1 turn. It also neutralizes Byleth's armor weakness for 1 turn.

As a top tier Savior unit, area-of-effect Specials are what can deal heavy damage to Byleth before combat. This Duo Skill protects himself against that, and it even removes his armor weakness for one turn. Using this Duo Skill on a critical turn can swing the momentum in your favor.

Winter Byleth (M) Weaknesses

Weak to Armor Effective Weapons

Winter Byleth (M) takes 1.5x damage from armor-effective weapons like Randgríðr, and one blow from this type of weapon will deal significant damage. Make sure you know what weapons you are up against before hopping too far into the line of battle!

Heroes with Effective Skills

Should you Unlock Potential?

Should You Unlock Potential for this Hero?	Cannot Unlock Potential

Byleth - Frosty Professors Only Appears as a 5 Star Hero!

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

Unlock Potential Tier List

Winter Byleth (M) - 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★
Holy Yule Blade	16	1	Accelerates Special trigger (cooldown count-1). Unit can counterattack regardless of foe's range. At start of combat, if unit's HP ≥ 25%, grants Atk/Def/Res+5 to unit, grants bonus to unit's Atk/Def/Res = 20% of unit's Res at start of combat, and neutralizes effects that inflict "Special cooldown charge -X" on unit during combat. At start of combat, if unit's HP ≥ 25%, foe's attack can trigger foe's Special, and unit's Res ≥ foe's Res+5, inflicts Special cooldown count+X on foe before foe's first attack (X = number of spaces from start position to end position of whoever initiated combat, max 3; if unit triggers Savior, value is treated as 3; cannot exceed the foe's maximum Special cooldown). At start of combat, if unit's HP ≥ 25% and foe's Range = 2, neutralizes effects that prevent unit's counterattacks during combat.	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★
Supreme Heaven	(Cooldown Count = 2) Boosts damage by X% of unit's Atk when Special triggers (if in combat against a dragon foe or beast foe, X = 50; otherwise, X = 25). If Special triggers, neutralizes foe's "reduces damage by X%" effects from non-Special skills. If foe's Range = 2 and unit or foe's Special is ready or triggered before or during this combat, reduces damage from foe's next attack by 30% (once per combat; excluding area-of-effect Specials).	5★

Passives

Skill Name	Effect	Learned At
Water Boost 1	At start of combat, if unit’s HP ≥ foe’s HP+3, grants Res+2 during combat.	5★
Water Boost 2	At start of combat, if unit’s HP ≥ foe’s HP+3, grants Res+4 during combat.	5★
Water Boost 3	At start of combat, if unit’s HP ≥ foe’s HP+3, grants Res+6 during combat.	5★
Fireflood Boost 3	Grants HP+5. At start of combat, if unit's HP > 50%, grants Atk/Res+7 to unit during combat, and also, if unit is within 2 spaces of an ally with HP > 50%, inflicts Special cooldown charge -1 on foe per attack during combat (only highest value applied; does not stack).	5★
Wary Fighter 1	If unit's HP ≥ 90%, unit and foe cannot make a follow-up attack.	5★
Wary Fighter 2	If unit's HP ≥ 70%, unit and foe cannot make a follow-up attack.	5★
Wary Fighter 3	If unit's HP ≥ 50%, unit and foe cannot make a follow-up attack.	5★
Weaving Fighter	At start of combat, if unit's HP ≥ 25%, inflicts Atk/Def-4 on foe, unit and foe cannot make a follow-up attack, reduces damage from foe's first attack by X% (if foe can make a follow-up attack, X = 80; otherwise, X = 40), and reduces damage from foe's follow-up attack by 40% during combat ("first attack" normally means only the first strike; for effects that grant "unit attacks twice," it means the first and second strikes; likewise, "follow-up attack" normally means the second strike; for effects that grant "unit attacks twice," it means the third and fourth strikes), and restores 7 HP to unit after combat.	5★
A/R Far Save 1	If a foe uses bow, dagger, magic, or staff and initiates combat against an ally adjacent to unit, triggers【Savior】on unit. If unit triggers Savior, grants Atk/Res+1 during combat. 【Savior】 Unit takes ally’s space, enters combat in ally’s place, and receives all after-combat effects. Doesn't trigger if ally is on terrain that unit can't move to or if multiple units are able to use Savior during the same combat. If Savior triggers, after-combat movement effects don't occur.	5★
A/R Far Save 2	If a foe uses bow, dagger, magic, or staff and initiates combat against an ally with 2 spaces of unit, triggers【Savior】on unit. If unit triggers Savior, grants Atk/Res+2 during combat. 【Savior】 Unit takes ally’s space, enters combat in ally’s place, and receives all after-combat effects. Doesn't trigger if ally is on terrain that unit can't move to or if multiple units are able to use Savior during the same combat. If Savior triggers, after-combat movement effects don't occur.	5★
A/R Far Save 3	If a foe uses bow, dagger, magic, or staff and initiates combat against an ally with 2 spaces of unit, triggers【Savior】on unit. If unit triggers Savior, grants Atk/Res+4 during combat. 【Savior】 Unit takes ally’s space, enters combat in ally’s place, and receives all after-combat effects. Doesn't trigger if ally is on terrain that unit can't move to or if multiple units are able to use Savior during the same combat. If Savior triggers, after-combat movement effects don't occur.	5★

Winter Byleth (M) as a Source Hero

Value of Skills	★★★★★

Winter Byleth (M) has Fireflood Boost 3, Weaving Fighter, and A/R Far Save 3 as inheritance options.

Weaving Fighter is a new skill introduced to the game by Winter Byleth (M).

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How to Get Winter Byleth (M) / Illustrations / Voice Actor / Quotes

How to Get Winter Byleth (M)

Obtained through a Special Summoning Event!

Winter Byleth (M) is a limited time Hero who can be pulled from a Special Heroes Summoning Event. They do not appear in regular summons.

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)	Zach Aguilar with Jeannie Tirado
Illustrator	Iori Suzuki
Appears In	Fire Emblem: Three Houses

Illustration

FEH: Related Guides

Special Heroes: Holiday Lessons

Heroes from Special Heroes - Holiday Lessons
Winter Byleth (M) [9.5/10]	Winter Edelgard [9.9/10]	Winter Dimitri [9.5/10]	Winter Yunaka [9.5/10]

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All Types of Red Weapons

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