Tiberius the Fearless
He does not let the fact that he is emperor go to his head. He is down-to-earth and able to make good decisions due to the fact that he does not view himself as a god.
He filled the treasury with very careful management and stabilized Rome's economy.
He married Vipsania Agrippina in 19 B.C. When his son was born in 13 B.C., he came back to Rome from the Alps to take on the role of a father.
Tiberius is willing to make sacrifices for the greater good. He divorced and remarried Julia the Elder, Augustus' daughter. He puts his people before his personal needs, and is able to balance his work and private life.