EMH

The Emergency Medical Hologram

When the Doctor on Voyager was killed because of the Caretaker taking the ship to the Delta Quadrant, the Emergency Medical Hologram, meant for short term use, was utilized as a full fledged doctor of the Voyager crew. Because of this he eventually got a personality and thus explored new aspects of what it is to be alive.

He developed a human family and had a number of other human experiences. He took a liking toward opera as well as a playwright and author, and developing meaningful relations with many of the crew. He later had an emotional dealing with  saving Harry Kim or Ensign Jet