Short answers, pulled from the story.
Judas Iscariot was one of the twelve disciples chosen by Jesus and his name likely meant he came from Kerioth, a town in Judea. The name Judas was a common designation for Jewish men derived from the Hebrew word for praise. Historical consensus places his life between the early 30s and 33 AD.
The Gospel of John states that Judas Iscariot was a thief who stole from the common purse held by the disciples. This financial corruption provided a potential motive for his betrayal that predates the thirty pieces of silver. The betrayal occurred in the Garden of Gethsemane when he kissed Jesus on the cheek to identify him to the soldiers.
The Gospel of Matthew describes Judas Iscariot hanging himself after returning the thirty pieces of silver to the chief priests. The Acts of the Apostles states that he fell headlong and burst asunder with his bowels gushing out. Early Church Father Papias of Hierapolis recorded a third version describing his body bloating and oozing with pus and worms.
The Gospel of Judas is a Coptic papyrus codex discovered near Beni Masah, Egypt, in the 1970s. The text dates to the second century and suggests that Jesus told Judas to betray him as an instrument of Divine Wisdom. The National Geographic Society published a feature article about the text in 2006.
Judas Iscariot is often depicted with red hair and sometimes with a dark-colored halo to signify his former status as an apostle. In Dante's Divine Comedy, Judas is punished for all eternity in the ninth circle of Hell named Judecca. He appears in numerous modern novels and movies including the rock opera Jesus Christ Superstar.
The Catechism of the Council of Trent wrote that Judas Iscariot possessed motive unworthy when he entered the priesthood and was sentenced to eternal perdition. The Council of Trent stated that Judas exercised his own free will to commit the betrayal rather than being predestined by God. The Catholic Church took no specific view concerning the damnation of Judas during Vatican II.