Edward Hyde

The other side of the coin of Doctor Henry Jekyll. While it was Henry Jekyll who fathered Mary, it was Edward Jekyll who fathered Diana. This explains her more rash, often rude, and uncouthe manner. Edward left Diana when she was very young and went on the run. He alligned himself with Adam Frankenstein and eventually Dr. Prendick.

After the confrontation at the Warehouse in Book I, Hyde escapes but is arrested and taken into custody of Sherlock Holmes.