** = denotes CAP mainstage debut
| Role | Actor |
|---|---|
| Arthur | Ian McGovern** |
| Patsy | Aurora Grooters |
| Lady of the Lake/Guinevere | Alison Keeler |
| Dennis/Galahad | Drew Dawson |
| Robin | Karissa Lyons |
| Lance | Lydia Davis |
| Bedevere | Tatum Murphy** |
| Historian 1 | Ella Walsh |
| Historian 2 | Cadence Spurgeon |
| Historian 3 | Allison Halstead |
| Knight 1/Minstrel 1/Ensemble | Isaiah Wing |
| Knight 2/Minstrel 2/Ensemble | Natalie Aanonson** |
| Man/Tim/God/Ensemble | Meghan Klein** |
| Lady of the Lounge/Ensemble | Addisyn Marvin |
| Laker Girls/Ensemble | Brenna Coleman** Eryn Lenhart Eve Wing |
| Finnish Mayor/Dennis’s Mother/Ensemble | Jonah Burton |
| Guard 1/Sir Bors/Head Ni/Ensemble | Lucy Laird |
| Guard 2/Maynard/Ensemble | Elisa Richter |
| French Taunters/Ensemble | Rosie Heaberlin Joey Lopez |
| Killer Rabbit/Ensemble | William Brown |
| Ensemble (Dead Bodies, Finland, Knights Chorus, French, Knights of Ni) | Charlie Downing Rebecca Hare** Amelia Hoffman** Kathryn Nau** Ethan Quinn |
** = denotes CAP mainstage debut