- This article is about the character. For the episode focusing on him, see Archen.
Archen is an Ancient refugee whom along with Harold J. Paxton, were fused together to create a Prehistoric Octo-Bird. He now goes to Stamford Gate GCC as a member of SG-1, having been moved from from SG-2 in the most recent SG Team Reshuffle. His first major role was in the Season Three episode named after him, and he has had many recurring roles ever since.
- "Prehistoric Octo-Bird" - He and Paxton are split from the Aircholeops, and reluctantly agree to join Stamford Gate's student body.
- "Rainforest Schmainforest" - Seen in Mr. Brown's classroom.
- "Archen" - First major role; Whilst he is still getting his head around the facility, he is tricked into owing Cronus six rupees in exchange for a Goa'uld Symbiote.
- "Hooked on Monkey Phonics" - Using his elastic powers, Archen acts like a slingshot to plummet a hamsterball-bound Mark Cotswolds into the air.
- "Nemesis" - Assists Puff and the others in fighting off the Replicators.
- "Life of Crime" - Seen on the playground.
- "The First Ones" - Seen at P3X-888's basecamp, observing a Goa'uld Queen fossil.
- "48 Hours" - Seen in hallways; background only.
- "Toad Stands By" - Seen in the library, using his elasticity powers to reach a book on a high shelf.
- "The Other Guys" - Seen in the background of Miss Genesect's Class.
- "Home at Last" - He is eliminated second in the search to find a new fourth friend for Puff.
- "Chain Reaction" - Seen at Henry Bauer's inauguration ceremony.
- "Full Circle" - Seen fighting Goa'uld forces during a climatic battle on Abydos.
- "Hiccup Power" - Seen taunting Sussie for having Bipolar Disorder.
- "Driving School for Idiots" - Archen unsuccessfully applies for a place to represent Stamford Gate at the Pencaster Driving Academy.
- "Strip Strangler" - Seen at various parties thrown at Rob's house.
- "AWESOME-O" - Seen at A.W.E.S.O.M.-O 4000's presentation.
- "Busy Going Backwards" - Seen in the Hallways.