!!Dr. Henry Jekyll

A scientist with an upstanding reputation in the community, who nonetheless is beset by evil urges which he cannot act out.

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* DeadManWriting
* DrivenToSuicide
* JekyllAndHyde: Obviously, the {{Trope Namer|s}}.
* MadScientist
* ProfessorGuineaPig
* SplitPersonalityTakeover
* TragicHero


!! Mr. Edward Hyde

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* AxCrazy
* DrivenToSuicide
* ForTheEvulz
* WouldHurtAChild: He has no problem trampling an innocent little girl just for pure fun.


!!Dr. Hastie Lanyon

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* DeadManWriting
* GoMadFromTheRevelation: [[spoiler:When he finds out that Hyde is Jekyll.]]

!!Gabriel John Utterson

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* DemotedToExtra: In most adaptations