| Name | Character | Episodes |
|---|---|---|
| Rosamund Pike | The Black Rabbit of Inlé (voice) | 2 |
| Nicholas Hoult | Fiver (voice) | 2 |
| Taron Egerton | El-Ahrairah (voice) | 2 |
| Gemma Arterton | Clover (voice) | 2 |
| James McAvoy | Hazel (voice) | 2 |
| Ben Kingsley | General Woundwort (voice) | 2 |
| Olivia Colman | Strawberry (voice) | 2 |
| Adewale Akinnuoye-Agbaje | Captain Vervain (voice) | 2 |
| Daniel Kaluuya | Bluebell (voice) | 2 |
| Lee Ingleby | Captain Campion (voice) | 2 |
| Mackenzie Crook | Hawkbit (voice) | 2 |
| Rory Kinnear | Cowslip (voice) | 2 |
| James Faulkner | Frith (voice) | 2 |
| Peter Capaldi | Kehaar (voice) | 2 |
| Freddie Fox | Captain Holly (voice) | 2 |
| John Boyega | Bigwig (voice) | 2 |
| Jason Watkins | Captain Orchis (voice) | 2 |
| Tom Wilkinson | Threarah (voice) | 2 |
| Anne-Marie Duff | Hyzenthlay (voice) | 2 |
| Daniel Rigby | Dandelion (voice) | 2 |
| Charlotte Spencer | Nettle (voice) | 2 |
| Craig Parkinson | Sainfoin (voice) | 2 |
| Peter Guinness | Silverweed (voice) | 2 |
| Miles Jupp | Blackberry (voice) | 2 |
| Henry Goodman | Blackavar (voice) | 2 |
| Rosie Day | Thethutinang (voice) | 2 |
| Murray McArthur | Farmer (voice) | 2 |
| Lorraine Bruce | Farmer's Wife (voice) | 2 |