Mr. Hyde is another persona of Dr. Jekyll. Dr. Jekyll, a scientist, wanted to create a formula that would absorb a person's evil. Once it was created, he experimented on himself. He made a mistake while making it and now whenever Jekyll drinks it, he transforms into a horrible, monstrous man named Mr. Hyde. Mr. Hyde then goes on a ranpage until the effects where off, then he turns back to Jekyll. 

Universal Monster RebootEdit

In the new Dark Universe franchise, Dr Jekyll is the leader of the monster hunter secret organization named "Prodigium". Before the brilliant Dr Henry Jekyll investigates the evil and good forces, and the tragic consequence for him is the mankind´s evil incarnation named "Edward Hyde" his other personality and alter-ego.