As trouble brews on the space trading colony of Iceworld, the Doctor and Mel encounter their sometimes-ally Sabalom Glitz and a new friend who goes by the name "Ace".
| Actor | Role |
|---|---|
 Sylvester McCoyThe Doctor | The Doctor |
 Bonnie LangfordMel Bush | Mel Bush |
 Sophie AldredAce | Ace |
 Tony SelbySabalom Glitz | Sabalom Glitz |
 Edward PeelKane | Kane |
| PPatricia QuinnBelazs | Belazs |
 Tony OsobaKracauer | Kracauer |
 Shirin TaylorCustomer | Customer |
| IIan MacKenzieAnderson | Anderson |
 Stephanie FayermanMcLuhan | McLuhan |
 Stuart OrganBazin | Bazin |
 Sean BlowersZed | Zed |
| NNigel Miles-ThomasPudovkin | Pudovkin |
| LLeslie MeadowsThe Creature | The Creature |
| LLynn GardnerAnnouncer | Announcer |
| MMiranda BoormanStellar | Stellar |
 Daphne OxenfordArchivist | Archivist |
| CChris MacDonnellArnheim | Arnheim |