Stephen Arden
Biographical information
Gender Male
Species Human
Age 36
Status Deceased
Cause of Death Alien Attack
Killed by Sil
Family Unnamed Son
Sil(Sex Encounter)
Abilities Anthropology
Played by Alfred Molina
Appearances Species

Stephen Arden is a character and scientist (anthropologist) from the film Species.


Stephen was an anthropologist member of a team of scientists and specialists led by SETI head honcho Xavier Fitch, which tracks and destroys Sil.

When the team celebrates their apparent victory of the death of Sil (In fact, Sil is still alive), Sil stalks them in their hotel. Sil takes an attraction to Preston "Press" Lennox. Following Dr. Laura Baker and Lennox to their room, Sil eavesdrops on their lovemaking and becomes aroused. When Stephen walks in on her eavesdropping, she immediately undresses in order to seduce him into sex. Sil succeeds in seducing him and they copulate, successfully inseminating and impregnating her. Sil kills Stephen shortly after he does indeed feel something in Sil's womb and know who she is.


  • "Oh my dear... I enjoyed that immensely!"
  • "Who are you? What are you doing here?"
  • "Wh... What are you doing?"
  • "This sort of thing doesn't usually happen to me"
  • "What about protection?"
  • "What?"
  • "Felt what?"
  • "What's started?"
  • "Oh, my darling girl!'
  • "Now, I know in some South African tribes women believe they know the exact moment of conception, but really..."
  • "Holy Shit!"