Griffin (The Invisible Man)

Griffin (The Invisible Man) is the villain from The Invisible Man. He was played by Claude Rains.

Biography
Jack Griffin works for Dr. Cranley, assisting him in food preservation experiments alongside his friend Dr. Arthur Kemp. Griffin is deeply in love with Cranley's daughter, Flora, and the two plan to marry, but Griffin is poor and thus afraid he has nothing to offer her. He begins experimenting with an obscure and dangerous drug called monocane, hoping his work will make him rich and famous—and a worthwhile husband for Flora. Griffin discovers a combination of monocane and other chemicals that makes a person invisible. Too excited by his discovery to think clearly, Griffin leaves Kemp and the Cranleys to complete the experiment in solitude. He injects himself with the formula over the course of a month and becomes invisible. Only after he is invisible does he realize that he does not know how to reverse the process. Panicking, Griffin goes to the village of Iping and rents a room in the Lion's Head Inn, where he begins searching for a formula to reverse the invisibility. He makes himself appear visible by wrapping his head in bandages and wearing dark goggles. Curious locals, the maddening side effects of monocane, and frustration from multiple failed tests drive Griffin insane. After he assaults Jenny Hall and severely injures her husband Herbert, Griffin is confronted by the police, but sheds his clothing to be invisible and eludes them. He seeks help from Kemp, but the monocane has so affected his mind that he succumbs to megalomania and plans world domination with "invisible armies". He wants to make Kemp his visible partner and assistant. Not even a visit from Flora and her father helps ease Griffin's increasing insanity. He vows to kill Kemp after his old friend alerts Inspector Lane to his whereabouts and despite intensive police protection surrounding Kemp, Griffin eventually makes good on his threats. After killing Kemp by tying him up in his car and sending it over a cliff, he seeks refuge from the cold in a farmer's barn. The farmer summons police, who set fire to the barn. As Griffin flees the burning barn, the Chief of Detectives, who can see his footprints in the snow, shoots at him, the shot passing through both of his lungs. Griffin dies from the gunshot wounds in the hospital. During this, the effects of the monocane begin to wear off and Griffin returns to sanity apologizing for his crimes by saying "I meddled in things that man must leave alone". The invisibility also wears off in death and Griffin's body becomes visible again.

Comparison to the novel
The film portrays Griffin more sympathetically than the novel. The novel's Griffin is callous and cruel from the beginning and only pursues the experiment for wealth and his ego. The movie shows Griffin as an honorable man who is misguided. His insanity is purely a side-effect of the invisibility drug and his motivation for the experiment was a misguided desire to do good for science and mankind, born primarily out of his love for his fiancée.