English | Japanese
"To drink... or not to drink!?”
English | Japanese
Dangerous Game: The Secret Game of Sin (密やかなる罪の遊戯, Hisoyakanaru Tsumi no Yūgi?) is the Noble Phantasm of Dr. Jekyll and Mr. Hyde, an elixir (miracle drug) that allows for the transformation of Jekyll into Hyde, the second personality inside the former's body that claimed so many victims in his life. It can also be used to revert the transformation, transforming Hyde back into Jekyll. The elixir was refined through pharmacy and alchemy as well as from an accidental result similar to degradation done over several years. It is an elixir that is impossible to reproduce with modern science, technology and magic.
Under the Assassin class, drinking the potion allows for Jekyll to turn into Hyde with a nature close to a Berserker, but Hyde retains a humanoid form and with more reason than his Berserker-class counterpart. In the case of Hyde, he acquires close-combat power comparable to the Three Knight Classes, even being capable of overwhelming them.
Under the Berserker class, upon drinking it, his form changes, becoming covered in black fur, his spine cracking, his muscles expanding, growing long canines and sharp claws, and his eyes becoming blood red, making him somewhat similar in appearance to a werewolf. In this form, his stamina greatly increases, as well as his strength and speed. He gains several skills that make him suitable for close quarters combat, most noticeably, a skill that he calls "Restructuring", which grants him a highly potent recovery ability, making him confident in that he can recover from being hit by even a Noble Phantasm.
The difference in transformation performed between being an Assassin and being a Berserker lies in his Self-Modification Skill. The Skill would be limited by the Assassin class. However, being summoned in the Berserker class would give rise to a cumulative effect of this Skill combined with Mad Enhancement, no doubt turning him into a beast that hardly resembled human.
The miracle drug bottle design uses a rose motif.
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Fate/Grand Order material III - Dr. Jekyll and Mr. Hyde, p.072-081, translated by TwilightsCall at Beast's Lair.
- ↑ 2.0 2.1 2.2 2.3
 Fate/Grand Order - Assassin Profile [T]
Henry Jekyll & Hyde - Assassin
Illustrator and Voice actor
Voice Actor: Miyano Mamoru
Noble Phantasm: C
Monstrous Strength B
Voice of Panic A
Presence Concealment A
Dangerous Game - Game of Surreptitious Crime
The character that appeared in the novel of 19th Century, "Dr. Jekyll and Mr. Hyde"-- or maybe the individual who became its model.
It has been said that he attempted to detach "evil" from his own personality, but instead revealed a personality that embodied "evil", eventually performing murders and in the end self-destructed.
Level 1 Bond
Source: "Dr. Jekyll and Mr. Hyde"
Alignment: Lawful Good (Jekyll)/ Chaotic Evil (Hyde)
A dual-existence that changes even his body as the personalities switch over.
Level 2 Bond
A sincere and rational good man-- the original personality.
To deeply thing about things is both his merit and demerit.
In contrary to his calm appearance, he has a strong sense of justice and was distressed by the "evil that lurks inside humans" while alive, having fought against it.
Level 3 Bond
A hedonist without sense of morals-- the "evil" personality.
An anti-hero of malice that reflexively attempts to injure everything.
It is unknown whatever evil really lurked inside Jekyll's heart, or if "it amounted to only this much" due to Jekyll being destitute of evil.
Level 4 Bond
"Game of Surreptitious Crime"
Rank: C Type: Anti-Unit
Dangerous Game. A miracle drug that morphs from Jekyll to Hyde, from Hyde to Jekyll. While as Hyde, he acquires close-combat power comparable to the Three Knight Classes.
Level 5 Bond
Powerless Shell: A
While his mind and body are as Jekyll, his parameters decline and it becomes difficult to perceive him as a Servant.
Conversely, upon employing the Noble Phantasm to become Hyde, his parameters explosively skyrocket as if a recoil.
Maybe due being summoned as an Assassin, or maybe because of the Master he lost in a previous summon, Jekyll is currently unable to completely suppress Hyde.
However, this too shall probably be settled one day.
The conclusion of the conflict between good and evil is...
ヘンリー・ジキル＆ハイド - アサシン