Winifred Hailey is fictional character from the Scott Pilgrim comic book franchise by Bryan Lee O'Malley, she got a job as a teenage movie actress mentioned in Scott Pilgrim vs. the World and featured in the 2006 Free Comic Book Day story: Free Scott Pilgrim.
Winifred Hailey is mentioned in Volume 2, as the actress playing alongside Lucas Lee in his latest movie: You Just Don't Exist.
Winifred Hailey appears again in Free Scott Pilgrim. While Winifred herself does not actually appear, eight clones of her pop out from a set of movie posters, issuing a battle against Scott. Seeing that he's afraid to hit a girl, Ramona "helps" Scott by controlling his movements from behind to attack the clones. The clones, albeit seemingly tough, are easily defeated each by a single punch, and immediately disappear, leaving behind some coupons for free drinks that Scott immediately cashes in a local mini-mart.
During the time of the fight, Wallace and Ramona contemplated if this was the work of a ninja and, to a greater extent, one of Ramona's Evil Exes. This is never confirmed nor disproved.