Decimus

Decimus was a soldier in the Roman Empire. When General Aulus Plautius went to visit the Druids, Decimus was sent with Philo as bodyguards. When Aulus didn't return to Philo and Decimus, the pair camped overnight and ran into Divis. Divis tricked them into falling asleep and stole a rabbit they were cooking and Philo's coin. Upon waking, Philo and Decimus took Divis prisoner, but he once again tricked them with the use of Big Pebble. Divis killed Decimus and sent his head into the Roman camp along with Philo, as a diversion so Divis could help Cait rescue her father, Sawyer. Entranced and mute, Philo was set to be watched by Brutus, and Decimus' head was placed on a stick nearby, hoping it would snap Philo out of his trance.

Decimus was from Sicily, and his family were goat farmers, but he did not enjoy his life so he joined the Roman Army. He suspected Philo's mother to be a whore.