• 
  Rachel Bloom

  Kara Doblowski
• 
  Didi Conn

  Billy's Mom
• 
  Vincent Kartheiser

  Lowell
• 
  Michael Kostroff

  Billy's Uncle Fred
• 
  John Lutz

  Billy's Cousin Corey
• 
  Ethan Phillips

  Dad
• 
  Constance Shulman

  Lowell's Mom
• 
  Tami Sagher

  Nervous Woman

• 
  Adam Pally

  Billy
• 
  Billy Eichner

  Speigel
• 
  Shannon Patricia O'Neill

  Officer O'Brien
• 
  Rebecca Naomi Jones

  Elana
• 
  Hasan Minhaj

  Amir
• 
  Julia Goldani Telles

  Tami
• 
  John Reynolds

  Perkins