Dr. Adrian Walker
First appearance (4.13 "Terra Firma")
Last appearance (4.17 "A Constellation of Doubt")
Gender Male
Species Human
Affiliation Earth
Portrayed by Nicholas Hammond


Dr. Adrian Walker was a xenobiologist. He was one of many experts interviewed for the television special "Alien Visitation".

Walker seemed to view the visit as a positive experience, stating that the aliens were not that different from humans, believing Chiana's controversial attitude wasn't a big deal compared to what human culture itself produced, and was amazed by Sikozu's gravity defying ability.


  • Look, you see only differences... tentacles, a tongue with venom. Everything about him screams 'ALIEN'. Now, close your eyes. Listen. General Ka D'Argo could easily be you or me.
  • (About Chiana's thoughts on sex): I'm not a psychologist, but that's rather innocent, hmm? I mean, you get more juice from Dawson's Creek.



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