Expect WandaVision to get weird.IGN caught up with the creative team behind the new Disney+ series at D23 Expo and asked how the series intends to approach its biggest WTF question: How can there be a WandaVision show when half of the series' name, Vision, was killed in Avengers: Infinity War ? Apparently, that's just the tip of the iceberg when it comes to WTF moments in the series, which is slated for a spring 2021 debut.

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"It's super avant-garde and weird. I don't think either of us [Paul Bettany and Elizabeth Olsen] could have expected to be going in this -- if we were going to continue in this -- [and for] it to continue in this direction," star Paul Bettany, who plays Vision, told IGN. (Watch the full interview above.) "I'm so excited, the scripts are amazing. It's going to be just great to drill down further into these things."Writer Jac Schaeffer explained that the big question of WandaVision is how to balance not just the question of how Vision returns, but also how Marvel Studios' first sitcom fits within the larger MCU."That's so much of the game, really, is how do you handle these big mysteries. How do you spin things out over a whole series?" she said. "We have these big meaty questions that we get to spend more than two and a half hours exploring, so that's been the work, is making it exciting and intriguing and head-turning at every moment."The new poster for WandaVision pushes the "sitcom" angle, showing Scarlet Witch and Vision sitting in front of a TV set in a very '50s inspired setting (which is reportedly the time period when the show is set). Bringing in sitcom and MCU alums Kat Dennings (2 Broke Girls, Thor: The Dark World) and Randall Park (Fresh Off the Boat, Ant-Man and the Wasp) into the fold also leans into that tone, as does the decision to cast Kathryn Hahn as the "nosy neighbor."WandaVision hasn't begun filming yet, but the producers did show D23 attendees a strange mashup of MCU scenes featuring Scarlet Witch and Vision alongside scenes from The Dick Van Dyke Show where Van Dyke's Rob and his wife Laura (Mary Tyler Moore) are debating whether there's something wrong with their relationship. This tone-setting footage for WandaVision seemed to imply that there's something wrong with Wanda's mind, and some fans are speculating she even would have created a false reality -- say, a '50s era sitcom-style setting -- where she and Vision could still be together.While Olsen wouldn't say just how everything coalesces in WandaVision, she did tease, "There are plenty of comic books that support why both of these characters should be in a sitcom.""It's definitely the oddest of all the Marvel endeavors so far," Bettany added.

Terri Schwartz is Editor-in-Chief of Entertainment at IGN. Talk to her on Twitter at @Terri_Schwartz