Everyone here has a write-up, drawn from the same records that explain the names while you read the text.
Jesus
The ChristThe carpenter from Nazareth whom the New Testament proclaims as the Messiah promised to Israel and the Son of God. He taught for roughly three years in Galilee and Judea, was executed under Pontius Pilate, and was raised on the third day. Christians across every tradition confess him as fully God and fully man, the formula the Council of Chalcedon settled on in 451.
MatthewMarkLuke
Mary
Mother of JesusA young woman in Nazareth who answered the angel's announcement with consent, and whose song of God lifting up the lowly is one of the earliest Christian hymns. She appears at the wedding in Cana, at the cross, and with the disciples in the upper room.
Luke 1:26-56John 2:1-11John 19:25-27
John the Baptist
ForerunnerA prophet in camel's hair who preached repentance at the Jordan and baptized Jesus. He named himself the voice crying in the wilderness from Isaiah, and was beheaded by Herod Antipas for condemning the king's marriage.
Matthew 3Matthew 11:2-19Mark 1:4-9
Peter
ApostleA Galilean fisherman who spoke first and thought later, walked on water and sank, confessed Jesus as the Christ, denied him three times, and was restored on a beach over breakfast. He preached the sermon at Pentecost and opened the door of the church to Gentiles at Cornelius' house.
Matthew 16:13-19Mark 1:16-18Luke 22:54-62
John
ApostleA fisherman called with his brother James, part of the inner three, and traditionally the author of the fourth Gospel, three letters, and Revelation. The Gospel calls him the disciple Jesus loved and places him at the cross, entrusted with Jesus' mother.
Mark 1:19-20John 19:26-27Acts 3:1-11
Judas Iscariot
Apostle who betrayed JesusOne of the twelve, who kept the money box and sold Jesus for thirty pieces of silver, then threw the money back into the temple and hanged himself. The Gospels report his motives sparingly and do not speculate.
Matthew 26:14-16Matthew 27:3-10Mark 14:10-11
Mary Magdalene
DiscipleA woman from Magdala on the Sea of Galilee, out of whom Jesus cast seven demons, who supported his ministry and stayed at the cross when most had fled. All four Gospels place her at the empty tomb, and John has her as the first person to see the risen Jesus.
Luke 8:1-3John 20:1-18
Martha
Of BethanySister of Mary and Lazarus, remembered for working in the kitchen while her sister listened, and also for the confession she made at her brother's grave, that Jesus is the Christ, the Son of God.
Luke 10:38-42John 11:20-27
Lazarus
Of BethanyThe brother of Mary and Martha, whom Jesus raised after four days in the tomb. John presents it as the last and greatest of the signs, and as the event that hardened the authorities' decision to act.
John 11John 12:9-11
Pontius Pilate
Roman prefect of JudeaThe Roman official who tried Jesus, judged him innocent, and sentenced him anyway under pressure from the crowd. A stone inscription found at Caesarea in 1961 carries his name and title, confirming the office the Gospels give him.
Matthew 27:11-26John 18:28-19:16
Caiaphas
High priestThe high priest who presided at Jesus' trial and had already reasoned that it was better for one man to die for the people. John records that line as unintentional prophecy.
Matthew 26:57-68John 11:49-52John 18:13-14
Nicodemus
Pharisee and council memberHe came to Jesus by night with careful compliments and was told he must be born again. He appears twice more, arguing for due process when the council wanted to condemn without a hearing, and finally bringing seventy-five pounds of spices to the burial, which is a royal quantity.
John 3:1-21John 7:50-51John 19:39-42
Joseph of Arimathea
Council member and secret discipleA wealthy member of the council who had not consented to its decision. He went to Pilate and asked for the body, which took nerve, and buried Jesus in his own new tomb. All four Gospels record it.
Matthew 27:57-60Mark 15:42-46John 19:38
The woman at the well
Of Sychar in SamariaShe came to draw water at noon, when nobody else would be there, and got the longest recorded conversation Jesus has with anyone. She raised the real dispute between their peoples, which mountain was the right one, and left her water jar to go tell the town.
John 4:1-42
Joseph of Nazareth
Husband of MaryA craftsman of Nazareth, betrothed to Mary, who was told in a dream to take her as his wife despite a pregnancy that was not his. He named the child, which in that culture was the act of claiming him as a son, and it is through Joseph that Jesus is legally of David's line.
Matthew 1:18-25Matthew 2:13-23Mark 6:3
Andrew
The rest of the TwelveThe apostles the gospels say least about. Andrew, Peter's brother, is the one who keeps bringing people to Jesus: his brother, the boy with the loaves, the Greeks who came asking. Thomas is remembered for one sentence of doubt and forgotten for another, let us also go, that we may die with him.
Matthew 10:2-4Mark 3:16-19Luke 6:14-16