From Tekken Zaibatsu Wiki
Roger Jr. and his mother joined The King of Iron Fist Tournament 5 to find Roger and, after a long struggle, they found him. But Roger was living the easy life, unconcerned about his family. Roger Jr.'s mother was flabbergasted at the sight of her husband and ultimately decided to divorce him.
After the divorce, life became hard for Roger Jr. and his mother. Shortly thereafter, The King of Iron Fist Tournament 6 was announced, and Roger Jr. and his mother decided to join the tournament in search of victory and financial security.