Name – Ambril
Species – Manussan
Planet – Manussa
Temperament – ambitious
Appearances – Snakedance

Ambril was the Director of Historical Research of Manussa. He was the custodian of the Great Crystal of the Mara. He disbelieved the Doctor's warnings about the Mara's return, and was manipulated by Lon into using the Crystal in a ceremony meant to recreate the Mara.