Originally introduced in 2015's Avengers: Age of Ultron, Elizabeth Olsen's Scarlet Witch became an instant fan-favorite, with audiences championing more screen-time and development for the character. Elizabeth Olsen's Marvel return as the Scarlet Witch highlighted in new Marvel Zombies posterWe are just days away from Elizabeth Olsen's next Marvel project. To give us all a glimpse of just how deadly the creature is, Marvel has unveiled a brand new poster for Marvel Zombies in which the Scarlet Witch takes center stage. Zombie Scarlet Witch in Marvel Studios' WHAT IF…? As for Elizabeth Olsen, this is the last Marvel Studios project that she's officially attached to (for now).