Lulu Obsidian
Shay's little sister and Yuto's friend, who is the Xyz Dimension counterpart of Zuzu Boyle. Kidnapped by Yuri when Duel Academy attacked their world, Lulu was kept in the Western Tower where she is placed under the Doctor's control by the time Kite rescues her in Shay's place. Though Lulu is released from Buggenstein's control during her duel against Shay, When she was looking for Kite, she ran into Yuya and she is once again being taken control to duel Yuya and Yuto together with Celina since she can only be freed by defeating the Doctor. After she is freed from the mind control, she and her counterparts are then sacrificed by Leo alongside to reconstitute their original self Ray while Lulu's bracelet is restored to the En Birds spell card which negates Xyz monster effects. Due to Riley's actions when the dimensions once more separated, with Ray ending up back in Arc-V after being expelled from the youth's body, Lulu was not able to return to the Xyz Dimension. During Yuya's duel against Declan, Lulu and her counterparts reacted to Yuya's dueling from within the reactor and Ray revived them in Zuzu's body to reunite with their friends. Lulu uses a Lyrilusc deck that focuses on Xyz Summoning and her ace monster is Lyrilusc - Assembly Nightingale. When her mind was controlled, she also added a Fusion Parasite to perform Fusion Summoning.