August DeValle was one of 'the Nine', the nine most influential businessmen in the New Earth Republic. He was the founder and owner of Republica Communications Inc, the second largest manufacturer of mobile phones in the Republic.
When he refused to sign over his company to Walter J. Matheson, he had the Nestene Consciousness mentally force him to complete the transfer with his signature and retinal print. He then was released and found by the Sixth Doctor. DeValle had a heart attack from his shocking experience, and the Doctor was unable to save him. (PROSE: Synthespians™)