Serenity Wheeler only shows up in Battle City. She's Joey's little sister and a real sweetheart. She's very innocent and naive (she make Yugi look worldly wise) and her brother would like to keep her that way. She likes to smile and loves to cheer her brother on. She thinks he's wonderful, and invincible (probably because she hasn't seen him duel much heheh!) She and Joey were separated when they were younger because their parents got a divorce. Joey stayed with their dad, and she went with their mom. But now their together again. She was going blind, but Yugi gave Joey his prize money from Duelist Kingdom and he used it to pay for her eye operation. So now she's good. She's younger than the other kids, but I'm not sure by how much.
Age: ??? younger than Joey