Which Byzantine emperor was deposed in 695 and restored to the throne in 705?

The Byzantine emperor deposed in 695 and restored to the throne in 705 was Justinian II.

Justinian II first ruled from 685 to 695. His harsh financial demands and aggressive treatment of opponents generated widespread resistance, and a revolt led to his deposition. The rebels mutilated him by cutting off his nose, a punishment intended to make him ineligible to rule again, and replaced him with Leontios.

Justinian survived exile and eventually reached the court of Tervel, the ruler of Bulgaria. Tervel supplied him with a large Bulgarian and Slavic force. In 705, Justinian and his supporters entered Constantinople through an unused water conduit after the city’s gates remained closed, enabling him to reclaim the throne.

His restoration did not bring reconciliation. Justinian took revenge on Leontios and Tiberios III, the emperor who had followed Leontios, and ruled increasingly violently until he was overthrown and killed in 711. His nickname, “the Slit-Nosed,” refers to the mutilation he suffered during his first deposition.