fictional character from Star Trek: Voyager
The Doctor, an Emergency Medical Hologram Mark I (or EMH for short), is a fictional character from the television series Star Trek: Voyager, played by actor Robert Picardo. He is an artificial intelligence manifesting as a holographic projection, designed to act as a short-term supplement to the medical staff of a starship during emergency situations, but when the starship Voyager is stranded on the far side of the galaxy with no medical personnel, he is forced to act as the ship's chief medical officer for several years. In the style of the Star Trek franchise's exploration of artificial intelligence, a simple software program becomes a major character in the show, which aired on UPN between 1995 and 2001.
The character also appeared in Star Trek: First Contact, as well as the now-closed Star Trek: The Experience amusement exhibition at the Las Vegas Hilton.
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