The Millie/Tim hybrid is played by Alison Brie, but you can be forgiven if you don’t recognize her at all. In addition to extensive makeup work on set that saw parts of Dave Franco’s visage applied to the actresses, there were also visual effects employed that changed the shape of her face to be more like her co-star’s/husband’s. Shanks explained,

For our August digital cover story, we interview 'Together' stars Alison Brie & Dave Franco about their unmissable new body horror nightmare.

Spoilers! Married "Together" movie stars Alison Brie and Dave Franco unpack that gruesome and strange final scene in their new horror rom-com.