Drusus Julius Caesar
In his capacity as Praetorian prefect, Sejanus quickly became a trusted advisor to Tiberius. By AD 23, he exerted a considerable influence over the decisions of the emperor, who referred to Sejanus as "Socius Laborum" (my partner in my toils). By this time he had been raised to the rank of praetor, a position which was not normally granted to Romans of the equestrian class. A statue had been erected in his honor in the Theatre of Pompey, and in the Senate, his followers were advanced with public offices and governorships. However this privileged position caused resentment among the senatorial class and the imperial family, in particular earning him the enmity of Tiberius' son Drusus Julius Caesar.