The most prominent is Wade "Unique" Adams (Alex Newell), a biological male identifying as a transgender girl who transfers to the school; the glee club initially bars her from dressing femininely in public, later relents off-screen, and Unique auditions for Rizzo in Grease while facing repeated misgendering from Ryder Lynn, culminating in a catfishing arc where Unique poses online as a girl to pursue Ryder and confesses the deception in the Regionals finale. These episodes explicitly frame acceptance of gender identity as a core conflict and resolution point.

Parallel threads include the ongoing Kurt-Blaine gay romance, Santana-Brittany lesbian relationship with long-distance breakup drama, and a guest lesbian couple (Jan and Liz) inspiring Blaine's marriage proposal in the finale. New characters like Marley Rose (body image struggles) and Ryder (dyslexia) layer additional personal-identity arcs onto the musical competition framework.

Ryan Murphy's stated goal of grounding stories in "underdog" realities and featuring specific gay/trans youth experiences directly informs these choices. While the season's primary engine remains glee club performances, romances, and NYADA crossovers, the transgender and queer identity elements occupy multiple dedicated episodes and drive character friction, elevating them from incidental to structurally influential.