Deva initially appeared to be in charge of the base on Gauda Prime from which Blake was operating as a bounty hunter and to be unaware of Blake's identity. In reality, he was a member of the resistance army Blake was forming on the planet. He consulted with Blake after the latter had brought in Arlen, chiding him for killing one of the other bounty hunters until he found out it was Tando. He received a report from Klyn on the destruction of Scorpio and gave Blake a list of targets along with authorisation as a temporary law enforcement officer. He then spoke to Arlen before inducting her into their army.
When Blake returned with Tarrant, Deva kept up the act of thinking Blake was a bounty hunter, although he followed his instruction to let the flier containing the rest of Scorpio's crew land at the base. He was knocked aside by Tarrant when he escaped and, despite pledging his loyalty to Blake to destroy the Federation, made it clear that he disapproved of Blake's bounty hunter charade, believing that the computer records he had accessed where adequate for establishing identities.
When the base was attacked by the Federation, Deva went looking for Blake but found he had already been killed by Avon. Moments later, Deva was killed by Arlen. (D: Blake)