Like Pilate, Caiaphas is a well established historical figure attested to in several historical sources. From the canonical gospels one learns that he was the “high priest that year” Christ was crucified (John 11:49), and that after being arrested Christ was taken to him (Mark 14:53, Matthew 26:57, Luke 22:54) where Caiaphas “questioned Jesus about his disciples and his teaching” (John 18:19). One also learns from Matthew that Caiaphas and others “plotted together to seize Jesus by stealth and kill Him” (Matthew 26: 4). There is also the vivid imagery of Caiaphas, after taking offense at Christ’s reply in Matthew 26:64, tearing his clothes and accusing him of blasphemy. It is clear that Caiaphas is portrayed as a chief villain in the gospels because of his part in the plot to kill Christ.
Read more at: The Historicity of Jewish High Priest Caiaphas | Bishop’s Encyclopedia of Religion, Society and Philosophy