Season 3 — 12 Monkeys -

Played by James Callis, Athan is revealed not as a one-dimensional villain, but as a tragic figure. The standout episode "Thief" explores his backstory in Victorian London, showing how a cycle of unalterable loss drove him toward the cult's nihilistic goals.

Cole and Cassie become "rogue" agents, desperately seeking a way to save their son, Athan, while believing his villainy is a product of indoctrination rather than destiny. 12 Monkeys - Season 3

In a major season-ending twist, it is revealed that Olivia is the true Witness. Her entire arc of seemingly "helping" the team was a calculated manipulation to seize control of the Army of the 12 Monkeys. Played by James Callis, Athan is revealed not

The narrative pivot from "killing a virus" to "killing a child" forces a philosophical fracture within Team Splinter. In a major season-ending twist, it is revealed