Agents Of SHIELD: 8 Characters Who Need To Return In Season 6
4. Lady Sif
Last Seen: Season 2
After playing a part in Thor and Thor: The Dark World and popping up in the first season of Agents of S.H.I.E.L.D., Lady Sif made one final appearance halfway through the show's second season, coming to Earth in pursuit of Vin-Tak, after which she vanished from the MCU, thanks largely to actress Jaimie Alexander's ongoing commitment to her own TV series, Blindspot.
Her absence from Thor: Ragnarok was definitely notable, and though she was spared from a woefully dismissive death like the Warriors Three received, it was revealed this week that she was one of many characters who disappeared thanks to the infamous Snap.
Though off-screen her continued absence makes sense, in-universe it's been quite a disappointment as no one, including Thor, has ever brought her up outside of a cheeky gag during the Asgardian play in Ragnarok.
At this point, she may never return unless we get a fourth Thor movie whose production doesn't clash with her Blindspot schedule, but with season six of Agents of S.H.I.E.L.D. following Avengers 4, which will likely see the effects of the Snap undone, it'd be great for Sif to make a return.