1. Crewman Hendorff
Episode: ‘The Apple’ (Star Trek, Season Two)
Actor: Mal Friedman
Death by: Killer plant.
Captain’s log: While other crewmembers are murderlised before him, Hendorff has the distinction of being among the group of four redshirted crewmembers who die in the space of one episode, launching the pop cultural sensation that is the red shirt.
Beaming down to Gamma Trianguli VI, Hendorff notices a spiky, colourful plant moving in his peripheral vision. Because he thinks plants can’t kill people, he naturally goes to investigate.
One lethal spore shot later, he's a goner. Be warned, kids: flora can kill!
Sample from death note to family: “Dear Mr and Mrs Hendorff. I must sadly inform you that your son, whose first name escapes me at this juncture, has been killed by a vengeful vegetable on Gamma Trianguli VI.
We are therefore opening the Hendorff Memorial Garden on the ship in his name and would like to invite you on a free trip to visit the charming display of Venus Flytraps and Triffids we have on display.
Please note, the pass is good for one visit only, and is valid for one single space year. Yours, James T. Kirk, Captain.”