|Current Residence||Kyoto, Japan|
|Relative(s)||Karen Jounouchi (Wife)
Serena Jounouchi (Daughter)
Steven Jounouchi is the father of Prism Star Serena Jounouchi and the husband of Karen Jounouchi. He is also the president of the Jounouchi Group. Although usually a very energetic businessman, he is extremely intimidated of his wife. She often phones him to voice her complaints.