Military officer who leads the first contact team and is later promoted to Lt. Colonel. He survives an Iratus bug infection attempt and plays a key role in defeating the Wraith leader Michael.
The expedition's primary tactical and scientific duo, bound by repeated life-or-death missions and mutual reliance.
Mutual operational dependency in high-stakes missions and city defense.
A warrior and commander who transitioned from wary outsider to trusted field partner.
A bureaucratic commander whose rigid authority frequently clashes with Sheppard's rogue field tactics, yet ultimately respects his operational success.
They jointly conduct reconnaissance missions to assess approaching enemy forces and navigate hostile planetary environments.
Keller executes Sheppard's directives to maintain operational cohesion.
Woolsey provides administrative and diplomatic backing for Sheppard's field operations.
A steady professional bond where Sheppard trusts Keller as a critical medical asset under his command.
Explore the full interactive character relationship map of Stargate Atlantis