| Neil Patrick Harris | Count Olaf |
| Patrick Warburton | Lemony Snicket |
| Malina Weissman | Violet Baudelaire |
| Louis Hynes | Klaus Baudelaire |
| K. Todd Freeman | Mr. Poe |
| Presley Smith | Sunny Baudelaire |
| Matthew Cardarople | Henchperson of Indeterminate Gender |
| Usman Ally | Hook-Handed Man |
| Jacqueline Robbins | White Faced Woman #1 |
| Joyce Robbins | White Faced Woman #2 |
| Robbie Amell | Kevin |
| B. J. Harrison | Mrs. Bass |
| Kevin Cahoon | Hugo |
| Bonnie Morgan | Colette |
| Zandara Kennedy | Policewoman |
| Keegan Connor Tracy | Scout Leader |
| Lucy Punch | Esmé Squalor |
| Dylan Kingwell | Quigley Quagmire |
| Richard E. Grant | Man with Beard But No Hair |
| Beth Grant | Woman with Hair But No Beard |
| Kitana Turnbull | Carmelita Spats |
| Allison Williams | Kit Snicket |
| John DeSantis | Bald Man |
| Avi Lake | Isadora Quagmire |