Sonia

Sonia

Gender	"female" is not in the list (Male, Female, Unknown, None) of allowed values for the "Gender" property.female
Relatives
unnamed parents Rafael (brother) Julian (brother)
Sonia

Sonia is Rafael's sister, who was killed by a tidal wave with Julian and their parents while on a ship piloted by Dartz.

Background

After Rafael survived, he was devastated that his family was gone. But after his second Duel with Yami Yugi, he was seen that she and the rest of her family was seen along with Rafael's "Guardians". When The Great Leviathan was destroyed, she was seen again with Julian and their parents and told him that they'll always be in his heart.