As fans of Scott Pilgrim vs. The World will know, the film ends with Scott (Michael Cera) and Ramona (Mary Elizabeth Winstead) getting back together in the aftermath of fighting her final evil ex, Gideon Graves (Jason Schwartzman), as well as Nega-Scott. However, that’s not the ending that was originally going to close the film out. Initially, Scott and Knives Chau (Ellen Wong) were the one true pairing, and for a very specific reason.
Article source: https://www.cinemablend.com/news/2566324/scott-pilgrim-alternate-ending-edgar-wright-which-he-prefers-michael-cera