| Type: | cameo |
| Age Range: | 30 – 50 |
| Gender: | male |
| Voice Part: | spoken |
| Vocal Range: | none |
| Dancing: | N/A |
| Name | Gender | Vocal Part | Age Range | Role Type |
| Dr. Henry Jekyll/Edward Hyde | male | tenor | 28 – 45 | lead |
| Emma Carew | female | soprano | 21 – 32 | lead |
| General Lord Glossop | male | baritone | 40 – 60 | cameo |
| John Utterson | male | baritone | 25 – 45 | supporting |
| Lady Beaconsfield | female | mezzo | 35 – 55 | cameo |
| Lord Savage | male | baritone | 30 – 50 | cameo |
| Lucy Harris | female | belt | 20 – 35 | lead |
| Nellie | female | mezzo | 30 – 45 | supporting |
| Poole | male | spoken | 40 – 65 | supporting |
| Simon Stride | male | bass-baritone | 25 – 4 | supporting |
| Sir Archibald Proops | male | baritone | 55 – 85 | cameo |
| Sir Danvers Carew | male | baritone | 50 – 70 | supporting |
| Spider | male | spoken | 30 – 50 | cameo |
| The Bishop of Basingstoke | male | baritone | 40 – 65 | supporting |