Loki premiere is the biggest thing . The Disney+ series, now streaming, sees Tom Hiddleston reprising his role as the god of mischief (or rather, an alternate-timeline version of himself)—but perhaps most exciting is the introduction of totally new characters to the . Enter: Wunmi Mosaku as Hunter B-15, a high-ranking employee of the Time Variance Authority (TVA), a mysterious bureaucratic organization that Loki finds himself working for by the end of episode one.