|Voiced by|| Fuyuka Oura (Japanese)|
Julie Lemieux (English)
Serena Sheen (original version: Serine Sheen (セリーヌ・シーン Serinu Shin)) is the Ambassador of Gundalia and Neathia, and the former Queen of Neathia. Her younger sister is Fabia Sheen, who is the reigning queen.
Serena is slender and has dark blue neathian short hair with turquiose eyes and a pinkish skin complexion. In Bakugan: Gundalian Invaders she wears a white royal dress with robes and a tiara/crown. She also has silver earings. In Bakugan: Mechtanium Surge, Serena wears a similar dress to the one she wore in Gundalian Invaders, but with more robes and broader.
Serena has been shown to have great leadership skills and often makes wise choices. She is loyal to the Sacred Orb and Neathia. Serena is not one to easily break under pressure or threat. She can motivate and keep her people calm, shown when she calms them whilst Neathia is under attack. She also loves her sister very much and tries to protect and guide her. She does not trust easily, like her sister, shown when she tests the Brawlers to see if they're worthy and legit. She's selfless and would give her life for those she cares for. Serena also seems to be fearless, bravely standing up to an armed Barodius without showing signs of worry or fear.
In addition to being Fabia's older sister, she is the acting queen of Neathia. Not one to crumble under pressure, Serena goes and sends Fabia to Earth to get help against The Gundalians. In addition, she calls the ancient and legendary "antimatter energy" to cover her home world. But The Emperor of Gundalia uses his Bakugan, Dharak to break down the shield to steal and absorb the energy's power. Serena's biggest challenge is to keep Neathia running smooth and keep the people calm and safe while waiting for Fabia and The Brawlers to help destroy Barodius and his Twelve Orders. She is extremely beautiful and pretty as Dan and the others mentioned when they first met.
In Dream Escape, she is wondering along with Elright why the Gundalians haven't attacked Neathia in some time. While, Elright takes that as a good sign, she is not so sure. Her suspisions are correct when Barodius himself attacks Neathia, Elright is confident that nothing they do can break though the 3rd Shield. But they are shocked to see that a new, more powerful Dharak, has broken through the shield easily. Afterwards her first thought was to get all of the citizens to emergency shelters below the castle and, after they were safely out of harms way all she could do is look on in horror as their home was being overrun and destroyed from invasion.
In Gundalian Showdown, she tries her best to calm her people's fears by telling them that the Castle Knights would protect them. But, secretly she reveals that it is not the Sacred Orb that protects them but, the other way around.
In Code Eve, she is confronted by Emperor Barodius himself, right after breaking in and attacking all of the Castle's defenses, he demanded she hand over the Sacred Orb. But, she refused, calling him crazy to think she'd ever do something like that, he counters by saying it wasn't a request but an order. Still refusing to listen, she stands up from her throne and makes it clear to Barodius that if he wanted the Sacred Orb. then, he'd have to go thought her first, which he was more then willing to do. But, before he could strike her, Dan came rushing into the room and almost tackled him when the Sacred Orb warped them both away right in front of her eyes.
In Destiny Revealed, she later appears along side Nurzak, the Brawlers and some Castle guard's to bear wittness to the event after Dan and Barodius's final battle for possession over the Sacred Orb, which ended in his defeat. But, unwilling to accept defeat, both Barodius and Phantom Dharak make one final attempt to gain the power of the Sacred Orb, by jumping in after it, but unable to handle the power, Dharak along with Barodius are both destroyed/absorbed into the Orb. Afterwards, she thanks Dan and the Brawlers for everything they've done, for her and her people, and agrees with Nurzak about making peace between their kind. Believing that this war has taught them all about the importance of peace and sees everyone off.
In Gundalia Under Fire, she is shown to be the Ambassador of Gundalia and Neathia.
- She's currently the only named/significant Neathian who was not seen brawling.
- Dan describes her as "beautiful" whilst he said Fabia was "cute", implying that she's prettier than her younger sister. However, Serena was in her Neathian form and Dan has not seen Fabia in her Neathian form.
- Her human disguise is yet to be seen.
Note: Serena had the same Bakugan as Fabia on Bakugan Dimensions.