Hypnotia is a supervillain created for the 1994 Iron Man animated TV series (Marvel Action Hour).
Hypnotia has what has been described as telepathic hypnosis. Though being of normal human physical capacity, her mental abilities are quite powerful. In the show, her power manifests as a series of concentric (usually yellow) rings coming from her forehead, hands, eyes, etc. This power effectively and almost immediately mesmerizes her victims, and leaves them obedient to her will. In some cases, such as with animals, evidence of her power can be seen with yellow swirls within an animals eyes.
Though the limits to her power are unknown, she has displayed how potent her power is when hypnotizing an entire group of villagers in seconds claiming "My spell has secured the villagers for 24 hours."
She can even leave her power on previously made recordings. In Episode 7, Origin of the Mandarin, after the brief Mandarin biography, Hypnotia extended her power though the projection device in what she called 'Delay Action Hypnotism', entrancing anyone who happened to be watching.

(Official Images and her Wikipedia entry)