A spaceship has 5 crew members. An alien kills one of the crew members which is replaced by a copy, but who is it?

Henny Moan
Leda
Marit Østbye
Gaia
Trini Lund
Elis

Bjørn Floberg
Akeron
Ola B. Johannessen
Jason

Ole-Jørgen Nilsen
Byråkraten
Debris70%
Battlestar Galactica70%
The Ray Bradbury Theater69%
NOS4A272%
Invasion70%
Psi Factor: Chronicles of the Paranormal69%
War of the Worlds72%
Paradise City80%
Another Life61%
Star Trek: Discovery69%
Alien: Earth73%
The Bionic Woman69%
Night Sky68%
Halo81%
Resurrection72%
Defiance67%
Land of the Giants67%
Heroes74%
Roswell, New Mexico78%
Invasion71%