Best Severance Characters, Ranked by IQ Score

Severance scores 167/200 (Masterclass tier) and the show's character density is the structural reason. Dan Erickson's commitment to letting the innie/outie cognitive-separation premise operate as actual philosophical material — and to letting Adam Scott, Britt Lower, John Turturro, and Tramell Tillman render the four-quadrant Lumon-cognition matrix — is the canonical contemporary Apple TV+ prestige achievement.

Characters: Mark Scout / Mark S. (Adam Scott) — the divided-grief-cognition protagonist. Helly R. (Britt Lower) — the most-overtly-rebellious innie. Irving B. (John Turturro) — the rule-bound elder. Dylan G. (Zach Cherry). Mr. Milchick (Tramell Tillman, Emmy-nominated) — the corporate-cheerful enforcer. Harmony Cobel (Patricia Arquette) — Lumon's Macrodata Refinement manager.