Answer: DRJEKYLL

AnswerCrossword Clue
DRJEKYLLScientific half
DRJEKYLLHe was his own worst enemy
DRJEKYLLMr. Hyde, alternately
DRJEKYLLFictional scientist
DRJEKYLLR. L. S. creation.
DRJEKYLLCreation of RLS.
DRJEKYLLR.L.S. character.
DRJEKYLLR.L.S. character