One of the Twelve Apostles. His name means "Twin," suggesting he may have had a twin brother or sister. He was likely a fisherman like the others, but his temperament was different: analytical, perhaps melancholic.
He was the one who always saw the glass as half empty. When Jesus wanted to go to Judea, Thomas assumed they would be killed. He was not afraid to die, but he expected the worst.
He was formed by Loyalty. Despite his pessimism, he stayed. He was the "Eeyore" of the group—gloomy but faithful. "Let us go also, that we may die with him."