Who she is: Sif, a.k.a. Lady Sif. Pop culture obsessives writing for the pop culture obsessed.

Lady Sif’s second guest appearance will be part of Agents of S.H.I.E.L.D.’s March 9 episode. You can tune in and catch new episodes of Agents of S.H.I.E.L.D. on Tuesday nights at 9 p.m. ET.

"Who You Really Are" - Coulson and team come to the aid of a confused Lady Sif, who has lost her memory after fighting with a mysterious warrior whose true mission will send shockwaves through S.H ...

If Lady Sif returns in future Thor adventures, Marvel Studios will have the perfect opportunity to pay off a seven-year-old tease by finally bringing a new hero into the MCU.Jaimie Alexander first ...

Jaimie Alexander has come into her own as one of the most dynamic actors of her generation and has built a reputation for ...

Note: Full spoilers for the episode follow. Yep, Sif helped! This was a big episode for Agents of SHIELD, as it featured Jaimie Alexander reprising her role from the Thor movies as Lady Sif. She ...

Day two saw the big guy Thor (Chris Hemsworth) show up to fight alongside Lady Sif. His outfit has been tweaked from his previous outings in Thor and The Avengers.

While Sif may have been missing from the action, Ragnarok featured a whole host of Marvel characters, including some very unexpected cameos. For spoiler-filled information on those, click here ...

After a fun cameo in Loki and being largely sidelined in Thor: Love and Thunder, Jaimie Alexander thinks it's time for Lady Sif to get her own series--and wants fans to get the word out. Variety ...