Cleopas is one of the two disciples who talked with Jesus on the Road to Emmaus, after his crucifiction. Emmaus is a village seven miles from Jerusalem. Cleopas and the other disciple did not recognize Jesus at first, but after they invited Jesus to stay with them, due to the late hour, they realized Who he was while breaking bread with him at the table.
Jesus vanished at that point. So the two disciples returned to Jerusalem to tell the eleven Apostles and those with them, that they saw the resurected Jesus. While they were still speaking about this, Jesus suddenly appeared in their midst and said "Peace be with you.".
There is a person named Mary, a witness to the crucifixion, who is identified as having a husband named Cleopas. But it is unknown if he is the same Cleopas who witnessed the resurrected Jesus.