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Christian Borle as Marvin |
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Stephanie J. Block as Trina |
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Andrew Rannells as Whizzer |
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Brandon Uranowitz as Mendel |
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Anthony Rosenthal as Jason |
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Tracie Thoms as Dr. Charlotte |
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Betsy Wolfe as Cordelia |
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Tally Sessions as Umpire (voice) |
| Crew | Gary Belcher | Title Graphics |
| Directing | James Lapine | Stage Director |
| Writing | James Lapine | Musical |
| Writing | William Finn | Musical |
| Directing | James Lapine | Director |
| Writing | William Finn | Writer |
| Writing | James Lapine | Writer |
| Sound | William Finn | Original Music Composer |
| Crew | Spencer Liff | Choreographer |
| Production | Tara Jayne Rubin | Casting |
| Sound | Vadim Feichtner | Music Director |
| Production | Daisy Placeres | Line Producer |
| Production | Douglas Chang | Producer |
| Directing | Rae Kraus | Second Unit Director |
| Sound | Dan Moses Schreier | Sound |
| Sound | Michael Starobin | Orchestrator |
| Editing | Nick Palm | Editor |
| Costume & Make-Up | Alexandra Brock | Makeup Artist |
| Costume & Make-Up | Jennifer Caprio | Costume Designer |
| Production | Gillian Campbell | Associate Producer |
| Art | David Rockwell | Set Designer |
| Production | Eric Woodall | Casting |
| Production | Tom Case | Supervising Producer |
| Costume & Make-Up | Rachel Estabrook | Makeup Designer |
| Directing | Matthew Diamond | Director |
| Lighting | Jeff Croiter | Lighting Director |
| Production | Andrew Carl Wilk | Executive Producer |
| Production | Kristy Geslain | Coordinating Producer |
| Costume & Make-Up | Tom Watson | Hair Designer |
| Sound | William Finn | Songs |
| Writing | William Finn | Lyricist |
