Thor #136

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  • 1st appearance of Sif in ongoing form, visually different than Sif from Journey Into Mystery #102 (1964)
  • 1st appearance of the Lurking Unknown, a Fear Lord
  • [December 2020 - Sif confirmed to reprise her role in Thor 4: Love & Thunder]
Details
Publisher Marvel
Published January 1967
Written By Stan Lee
Illustrated By Jack Kirby