Joaquin Phoenix Freddie Quell Philip Seymour Hoffman Lancaster Dodd Amy Adams Peggy Dodd Laura Dern Helen Jesse Plemons Val Dodd Ambyr Childers Elizabeth Dodd Rami Malek Clark Madisen Beaty Doris Solstad Kevin J. O'Connor Bill White Patty McCormack Mildred Drummond Lena Endre Mrs. Solstad Barbara Brownell Margaret O'Brien Amy Ferguson Martha the Salesgirl Jennifer Neala Page Winn Manchester Christopher Evan Welch John More Jillian Bell Susan Gregory Joshua Close Wayne Gregory Martin Dew Norman Conrad Brady Rubin Michelle Mortimer Jill Andre Beatrice Campbell Barlow Jacobs James Sullivan David Warshofsky Philadeelphia Police Mari Kearney Dancer Fiona Dourif Dancer Melora Walters Band (Voice) AnnaCorey Madam Grace Love Interest (uncredited) Bill Blair Man at the Bar (uncredited) Brittany Kilcoyne McGregor Dancer Megan Rose Fox Dancer Liz Clare Dancer Ally Johnson Dancer Baily Hopkins Dancer Audrey Finer Dancer Katie Boland Young Woman