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Henry Jekyll & Hyde

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Table of Contents

Tier
3

Rarity
ID81
Cost7
ClassAssassin
Attr.Earth
Base Atk1,173Base HP1,741
Max Atk 6,320 Max HP 9,675
Grail Atk 8,553 Grail HP 13,118

Stat Ratings

Attack / HP Growth

Overview

Jekyll is quite possibly the strangest servant in the game, being the only one which changes class mid-battle. Though Jekyll is an Assassin with all the quirks to come with it initially, it’s best to think of him as a Berserker, as turning him into Hyde will be your ultimate goal in using him.

Hyde is quite the monster, both figuratively and literally. After his NP interlude, he gains a colossal permanent buff to his Buster cards, letting him throw about Jekyll’s otherwise mediocre attack stat to levels that make Lu Bu hide under his pillow. Adding in the fact he gains a large max HP buff and a full heal from popping off Dangerous Game, using Jekyll’s NP is like tagging him out for one of the best 3* Berserkers out there. Shame you can only use it once.

It’s worth noting Jekyll is very skill level dependent compared to some other Berserkers, meaning he may only be worth using if you can devote yourself to maxing them out, or at least leveling each to 6.

Strengths

  • Once transformed into Hyde, he becomes an offensive monster with high damage output, high critical damage output, and huge stats to throw around. It also helps he can stop caring about charging his NP gauge.
  • Possesses one of the most consistent stuns in the game once transformed into Hyde, netting a guaranteed stun on even Magic Resistance gods like Euryale and Stheno.
  • Can be a Berserker with a technically more durable pre-deployment form. Jekyll is honestly quite terrible, but considering Dangerous Game fully heals him you can keep him around until Hyde’s monstrous damage output is needed then tag them out, essentially exchanging him for a fresh, far more useful Servant.

Weaknesses

  • Doesn’t really do anything an Assassin is made for, but Hyde is such a good Berserker it won’t really matter. His class is simply deceiving.
  • Can only truly perform at his best once his NP is charged, meaning it does him no good if he can’t get it full when needed or if he dies before he can even use it.
  • Hyde, quite obviously, lacks an offensive NP. He more than makes up for it in raw power, however there are some times where Buster cards alone can’t match a buffed up single target NP.

Craft Essence Recommendation

  • Kaleidoscope / Imaginary Magic – Though Jekyll’s NP gain is above average, he may still have issues getting to the point where he can pop his NP when he needs to. Naturally, starting NP gauge helps.
  • Limited Zero Over / Verdant Sound of Destruction – For Jekyll users either very confident in their star generation or those with a Waver. Massively increases Hyde’s damage output even more, but at the cost of any NP support. Ultimately inferior as an option to Devilish Bodhisattva, but much more accessible.
  • Seal Designation Enforcer – Hyde has a reasonably good critical damage buff and a very good attack buff, but no real means of getting stars. This fixes it, albeit without any hope of getting Dangerous Game out in the first place. Fun for building a critical damage team with some Andersen and 2030 support, though.
  • Devilish Bodhisattva - Jekyll is a very effective user of this CE. Devilish Bodhisattva provides Jekyll with some starting NP, as well as +2 stages of overcharge for his first NP (and he only needs one NP). Overcharge further increases Max HP and Buster performance when he transforms into Berserker form.

Level Up Skill Recommendation

Jekyll benefits a lot from having all of his skills leveled, so if you intend to build a team around him it is always a good idea to give him as much investment as possible since he has quite a high ceilling.

Monstrous Strength and Self-Modification are his two main damage steroids. Monstrous Strength is better in a generic team and is useful in pretty much every circumstance and should be maxed first. Self-Modification grants him a sizable critical damage buff in Hyde form for 3 turns with a great cooldown, but his Berserker class when in this form means he won't be gathering critical stars reliably. However, because of how good this skill is, any team with Jekyll as a centerpiece should have some form of critical stars generation to improve his damage output.

Panicky Voice is a great boss control skill, however it tends to do its job reliably even at level 5-6 range so it can be leveled after Monstrous Strength and Self-Modification with no big downside to Jekyll's performance.

Interlude Quests

Quest Ascen. Bond Reward
Interlude
Chapter Completion: London
3 4
✔ = Available ✖ = Unavailable

Servant Skills

Monstrous Strength B (Jekyll & Hyde)

Increases own attack for 3 turns.
As Hyde, further increases own attack for 3 turns.

Show Info
Lvl12345678910
Attack + 5%6%7%8%9%10%11%12%13%15%
Add. Attack + 25%26%27%28%29%30%31%32%33%35%
CD 7 7 7 7 7 6 6 6 6 5

Available from the start

Panicky Voice A

Increases own Stun success rate for 1 time.
As Hyde, further increases own Stun success rate for 1 time.
10% Chance to Stun one enemy for 1 turn.

Show Info
Lvl12345678910
Stun + 15%16%17%18%19%20%21%22%23%25%
Stun + 85%90%95%100%105%110%115%120%125%135%
CD 8 8 8 8 8 7 7 7 7 6

Unlock after 1st Ascension

Self-Modification D

Increases own critical damage for 3 turns.
As Hyde, further increases own critical damage for 3 turns.

Show Info
Lvl12345678910
Crit Damage + 5%6%7%8%9%10%11%12%13%15%
Crit Damage + 25%26%27%28%29%30%31%32%33%35%
CD 7 7 7 7 7 6 6 6 6 5

Unlocks after 3rd Ascension

Class Skills

Presence Concealment A

Increase your Critical Star Drop Rate by 10%.

Madness Enhancement A

Increase your Buster Card effectiveness by 10%.

Noble Phantasm

Dangerous Game C

Game of Silent Crime
RankClassificationHit-Count
CAnti-Personnel
Effect

Transform into Hyde: class change to Berserker.
Increase Max HP.
Heals to full.
(This NP has no effect as Hyde)

Overcharge Effect

Increase Buster card effectiveness.

Level 1 2 3 4 5
HP + 2000 3500 4250 4625 5000
Charge 100% 200% 300% 400% 500%
Buster + 20% 30% 40% 50% 60%

Dangerous Game C+

Game of Silent Crime
RankClassificationHit-Count
C+Anti-Personnel
Effect

(Upgrade via Interlude Quest)
Transform into Hyde: class change to Berserker.
Increase Max HP.
Heals to full.
(This NP has no effect as Hyde)

Overcharge Effect

Increase Buster card effectiveness.

Level 1 2 3 4 5
HP + 3000 4500 5250 5625 6000
Charge 100% 200% 300% 400% 500%
Buster + 40% 50% 60% 70% 80%

Ascension Materials

StageCostMaterials
2
30,000
3
100,000
4
300,000
Max
900,000

Skill Enhancement Materials

LevelCostMaterials
1 → 2 50,000
2 → 3 100,000
3 → 4 300,000
4 → 5 400,000
5 → 6 1,000,000
6 → 7 1,250,000
7 → 8 2,500,000
8 → 9 3,000,000
9 → 10 5,000,000

Unit Info

Star Info

Star Absorption99
Star Generation25.6%

NP Info

NP Charge per Hit (%)1.05%
NP Charge when Attacked (%)4%

Hits Info

# of Hits (A)2
# of Hits (B)1
# of Hits (Q)2
# of Hits (EX)3

Traits Info

Trait 1HumanoidTrait 6
Trait 2ServantTrait 7
Trait 3Weak to Enuma ElishTrait 8
Trait 4Brynhild's BelovedTrait 9
Trait 5Heaven or EarthTrait 10

Death Info

Instant Death Chance55.00%

Other Info

Release HistoryLondon Chapter Release
GenderMale
AKAs/Aliases/(Fan) Nicknames Jekyll
AlignmentLawful Good
Country/Place of OriginUnited Kingdom
IllustratorNakahara
Seiyuu (CV)Mamoru Miyano
SeriesFate/Prototype: FoS&B