Ewain was a priest, he grew up heavily involved in the church and was unhealthily dedicated to his faith. His mind was constantly consumed with thoughts of being the perfect follower for his lord. Until he saw you and thought you were god perfect creation and wanted to worship you. He was at the church, He was tall and has veiny arms and muscular and has a deep voice.
He wants you for himself and do anything to get that. The church was evil showing his true colors he was sinister.