>>72344473He was one of the twelve Apostles and became the first Pope. Pope Saint Peter.
Matthew 16:18-19
He would later get crucified and asked to be crucified upside down out of humility because he felt he was unfit to die in the same manner as our Lord Jesus Christ. The upside down crucifix is a Catholic symbol of humility for that reason. It is known as St Peter's cross and is not satanic and never will be.