The Best Star Trek Transporter Mishap Episodes

In what remains one of the most controversial Star Trek episodes among fans, a trip through the transporter merges the Vulcan security chief Tuvok (Tim Russ) with the Talaxian morale officer Neelix (Ethan Phillips) to make a brand new person — Tuvix (Tom Wright).

It takes the crew of Voyager a few weeks to figure out how to safely separate Tuvok and Neelix, by which point Tuvix has made friends, worked with the crew, and sees himself as an individual distinct from either the Vulcan or the Talaxian. To bring Tuvok and Neelix back, he argues, would mean murdering Tuvix. Fans still debate about whether or not, when Captain Janeway (Kate Mulgrew) brings Tuvok and Neelix back, it’s a surgery or an execution.