Babylon 5: Thirdspace

Captain John J. Sheridan leads Babylon 5 through a sudden, dangerous crisis sparked by an awakened artifact. He must balance crew welfare, station defenses, and political concerns as the threat escalates. In the end, he makes the hard call to destroy the artifact, risking a cover-up to protect the station's secrecy. He embodies steady command and resilience under pressure.

As a xenoarchaeology expert from Interplanetary Expeditions, she is responsible for examining the artifact. She asserts the device is a Jumpgate to Thirdspace and pushes to power it, under pressure from the project. Her scientific curiosity is tempered by fear as the artifact influences minds. She ends the investigation with a sense of caution and chooses to go on hiatus.

Lyta Alexander is a telepath who transmits a 'race memory' about the artifact's origin and its builders. She guides Captain Sheridan on deactivating the gate, using her unique abilities to reveal crucial information. Her powers also highlight the vulnerability of the station's mindscape under external influence. Her involvement underscores the peril and potential of telepathic insight.

Delenn, a Minbari ambassador and pivotal leader, navigates inter-species politics while the station endures the crisis. She aids in understanding the Vorlons’ history and the artifact’s origins. Her calm diplomacy helps coordinate responses and reassure the crew during the siege.

Under the artifact's influence, Deuce leads a group of thralls who demand acceleration of the excavation and turn increasingly violent. His actions illustrate the artifact's mind-control capabilities and the danger of unchecked manipulation. He serves as the foil to the station’s defensive leadership.