| Hint | Name | Info |
| Tried to sell Rex | |
| Wouldn't kiss Connor | |
| Rex's original owner | |
| Worked for Helen | |
| Student-Turned-Hero-Turned-Scientist | |
| Policeman | |
| Allergic to bugs | |
| Kept a pet Smilodon | |
| First Military Assistance | |
| Man from the 1880s | |
| Jenny's unknowing husband | |
| Almost committed to Bedlam | |
| Investigated the anomalies for the Home Office | |
| Replaced Lester for a spell | |
| Brilliant Scientist | |
| Second Military Assistance | |
| Runs the ARC | |
| From the future | |
| | Hint | Name | Info |
| Head of Security for Christine | |
| Professor | |
| Sent on missions by Eve (Primeval Evolved) | |
| Assistant | |
| Don't give Abby an excuse to shoot her | |
| Worked at the British Museum | |
| Join his son in the past | |
| Missing, assumed dead | |
| Cloned | |
| Ethan's love | |
| Helen's alias | |
| Investigated conspiracies | |
| Killed by Parasite | |
| Resigned and got married | |
| Wants revenge for his lover's death | |
| Engaged Animal Lover | |
| Thought to have died in the old house | |
|