Fans of the Marvel Comics know that David Tennant is playing Kilgrave in the Jessica Jones Netflix series, who in comics lore is also known as the Purple Man.
The Purple Man's powers include using chemical pheromones to control and manipulate other people.
It's unclear how close the Jessica Jones Netflix series will stick to the comic books, but the official Netflix page has been updated with a purple background (as well as the new Comic-Con logo), which may hint at the use of pheromones due to the cloudy nature of the image.
Likewise, previous set pics featuring Tennant revealed the actor in a purple suit as Kilgrave.
"Jessica Jones" premiers later this year starring Krysten Ritter (Jessica Jones), David Tennant (Kilgrave), Mike Colter (Luke Cage), Rachael Taylor (Patricia “Trish” Walker), and Carrie-Anne Moss.
Synopsis: Working as a private investigator in New York's Hell's Kitchen, an ex-Super Hero's past comes back to haunt her in "Marvel’s Jessica Jones."