|Planet of origin||Earth|
US Air Force|
|Out of Stargate universe information|
|Portrayed by||Garvin Cross|
|First appearance||"Children of the Gods"|
SG-1 and SG-2 are sent to the coordinates found by Ferretti. Casey is doing recon and reports back to Colonel Jack O'Neill and Major Charles Kawalsky that he found traffic on the ground around the mountains in the last couple of days.
After Warren destroyed a death glider with a FIM-92 Stinger missile to save SG-1 and the escapees, Kawalsky order Warren and Casey to stand on his right. On the hills, they look back and report some movement in the trees, incoming hostiles. They defend the position, yet they're soon outnumbered. Kawalsky orders them to fall back. They rush down the hill and continue to defend the position against the Serpent guards.
When Daniel Jackson dials Earth, Casey hurries the refugies to pass through the Stargate but Casey is hit by staff weapon's blast. O'Neill and Kawalsky pull him back through the Stargate in Stargate Command. There, medics come to Casey to take care of him.
- Casey's fate after "The Enemy Within" is not known as he didn't appear since.
- Casey's military rank and corp are deduced on Jack O'Neill's speech in "Children of the Gods".
- Casey's nationality is induced as he is part of the US Air Force.