Their partnership combines O'Neill's military leadership with Daniel's archaeological and cultural expertise.
O'Neill returns to Abydos to retrieve Daniel in S1E1, and they continue serving together through the SG-1 missions.
They form one of the team's strongest combat and personal loyalties.
O'Neill and Teal'c escape Apophis's attack together in S2E1 and repeatedly undertake life-threatening missions as SG-1 partners.
Their command relationship is grounded in mutual respect and shared responsibility for Earth.
Hammond commands the SGC while O'Neill leads SG-1, and O'Neill fights to have Hammond reinstated in S4E15.
Their professional relationship is sustained by mutual respect, trust, and restrained personal feelings.
Carter serves under O'Neill in SG-1 from the team's formation, and S4E5 reveals that their suppressed feelings affected a Tok'ra lie-detection test.
They cooperate despite Maybourne's history as a rogue operative.
O'Neill works with Maybourne to restore Hammond in S4E15, rescue Carter in S5E11, and solve later crises.
O'Neill views Kinsey's political interference as a danger to Earth's defense.
Kinsey shuts down the Stargate program in S1E21, and O'Neill later helps expose conspiracies connected to Kinsey in S6E14 and S8E14.
Their conflict embodies Earth's military resistance to Goa'uld invasion.
O'Neill leads missions against Apophis from S1E1 onward and helps destroy his attacking fleet in S2E1.
O'Neill gradually accepts Jonas as a capable, if unconventional, member of the team.
After Daniel's death in S5E21, Jonas joins SG-1 and works with O'Neill during S6 missions.
Their connection is a dependable operational relationship within Stargate Command.
Walter supports SG-1's gate operations throughout the series and joins O'Neill and others in the routine mission shown in S10E6.
Davis provides military coordination when SG-1 needs support beyond the SGC team.
Davis assists O'Neill and SG-1 during the Teal'c gate-pattern crisis in S5E14.
Explore the full interactive character relationship map of Stargate SG-1