Matthew Broderick plays Alan Simon, Arnold's love interest who struggles with his own internal conflicts.
Anne Bancroft takes on the role of Ma Beckoff, Arnold's mother who comes to terms with her son's identity over the course of the story.
Brian Kerwin portrays Ed Reese, a bisexual man who becomes involved in Arnold's life.
Eddie Castrodad plays David, a significant character in Arnold's journey towards self-acceptance and understanding.
Lorry Goldman embodies the character of Phil Beckoff, Arnold's estranged father, whose relationship with his son is complex and evolving.
Ken Page takes on the role of Murray, a close friend of Arnold's who provides support and humor throughout the trials he faces.
Karen Young portrays Laurel, a woman who enters Arnold's life and adds a new dynamic to his personal journey.
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