Judas Iscariot
Judas Iscariot (died AD) was a disciple and one of the original Twelve Disciples of Jesus Christ. According to all four canonical gospels, Judas betrayed Jesus to the Sanhedrin in the Garden of Gethsemane by kissing him and addressing him as "Rabbi" to reveal his identity to the crowd who had come to arrest him. His name is often used synonymously with betrayal or treason. Judas's epithet "Iscariot" most likely means he came from the village of Kerioth, but this explanation is not universally accepted and many other possibilities have been suggested.
Jesus
The Gospels say that Jesus was betrayed to the authorities by a disciple, and many scholars consider this report to be highly reliable. He was executed on the orders of Pontius Pilate, the Roman prefect of Judaea. Pilate most likely saw Jesus' reference to the Kingdom of God as a threat to Roman authority and worked with the Temple elites to have Jesus executed. The Sadducean high-priestly leaders of the Temple more plausibly had Jesus executed for political reasons than for his teaching. They may have regarded him as a threat to stability, especially after he caused a disturbance at the Second Temple. Other factors, such as Jesus' triumphal entry into Jerusalem, may have contributed to this decision. Most scholars consider Jesus' crucifixion to be factual, because early Christians would not have invented the painful death of their leader.