The show maintains its established diverse original casting across the long-running series, featuring actors such as Viola Davis as Annalise Keating and Aja Naomi King as Michaela Pratt in roles created for the series without any source-material alterations or forced identity swaps. A prominent gay relationship between Connor and Oliver advances through personal milestones and emotional conflicts that tie directly into the group's shared secrets and legal crises. Social-issue elements appear in select episode plots, including an asylum case involving an undocumented immigrant and a civil rights lawsuit centered on disability discrimination via a dating app, yet these function strictly as procedural subplots within the case-of-the-week structure.

The season includes a defense tied to a school shooting incident, but none of these topics serve as the foundational premise. No statements from creator Pete Nowalk indicate activist intent or identity-politics motivations shaping Season 6 character arcs or overarching plots, keeping progressive themes incidental to the thriller elements.