12 MIA Marvel Cinematic Universe Characters Unlikely To Ever Return

Nobody expected Natalie Portman to return to the MCU, given that a rift seemed to have developed between her and Marvel following her appearances in the first two Thor films.

Both she and Thor’s other love interest, Lady Sif, disappeared from the series at the same time, but there has been no mention of Jaimie Alexander returning alongside Portman in Thor: Love And Thunder. Somewhat unde-rutilised in the first two films, her absence from Thor: Ragnarok was probably for the better, given how she may well have ended up being dispatched as swiftly as the Warriors Three were.

Kevin Feige revealed in an interview that Sif had been dismissed from Asgard prior to this by Loki masquerading as Odin, having originally returned there following her last chronological appearance in an Agents Of S.H.I.E.L.D episode. Where she is now is anybody’s guess, and it's hard to see her slotting in to either Thor's new cosmic escapades or Valkyrie's rebuilding of Asgardian society on Earth.

Fans are quite vocal about her, however - more so than MCU's other missing stars - so never say never.