Sebastian Smythe (Grant Gustin)
Sebastian Smythe is the former lead singer of the Dalton Academy Warblers. He is openly gay, and was originally described as the show's main villain since his introduction at the beginning of Season Three. Sebastian is also shown to have an un-reciprocated interest in Blaine Anderson.
Blaine Anderson (Darren Criss)
Blaine Anderson is currently a senior student at William McKinley High School, and is the Senior Class President. He was the former lead member of the Dalton Academy Warblers, since he later transferred to McKinley to be with his boyfriend, Kurt Hummel, because he couldn't "stand to be away from him." Blaine is openly gay and was in a relationship with Kurt, before it ended because Blaine had cheated with Eli, someone he had met on Facebook.