DISCLAIMER: Both, Dr. Jekyll and Mr. Hyde are NOT part of the classic Universal Studios Monsters, though they did share audiences back in the 1930s and '40s. However, in the spirit of inclusivity and comaraderie, BOTH are now Honorary Members of the guild due to their history, presence and integrity.
Our thanks to Warner Brothers Studios for bringing to the screen these great characters based on The Strange Case of Dr. Jekyll and Mr. Hyde, by Robert Louis Stevenson.