11 (Allyce Beasley) refers to her husband, Herbert. Beasley's character, Agnes, in the TV series Moonlighting (1985) was in a relationship with Herbert Viola (Curtis Armstrong).
Patricia Lugo's daughter is Usnavi and goes to Hunter. Usnavi is a character in Lin Manuel Miranda's "In The Heights" and LMM went to Hunter. Usnavi is a reference to a U.S. Navy ship, one of the first sights Usnavi's parents saw in the U.S.
Owen and Annie's subject numbers are "1" and "9" respectively. The first and ninth letters of the alphabet are "A" and "I", possibly referring to GRTA's Artificial Intelligence.