Alice Gehabich hails from Moscow, Russia. After her parents' presumed death, she lived with her grandfather, Dr. Michael Gehabich, who homeschooled her because local schools were inaccessible. Following his disappearance, she stayed with her aunt and uncle. Though she possesses deep knowledge of Bakugan battle techniques and serves as a strategist for the Battle Brawlers, she initially avoids battling due to self-doubt, fear of loss, and an aversion to violence. Kind, polite, and perceptive, she often prioritizes others' needs, bonds closely with Runo Misaki, worries about Dan Kuso and Shun Kazami, and treats Marucho Marukura like a younger brother. However, she can be overly trusting, as when deceived by Lync Volan.

Exposure to negative energy from Naga through her grandfather's dimension transporter unconsciously transforms her into Masquerade, a cunning and aggressive alter ego. As Masquerade, she wields Darkus Alpha Hydranoid and becomes a powerful antagonist. After Dan defeats Hal‑G, the mask dissolves and a confused Alice learns the truth. Blaming herself for Masquerade’s actions, she tries to leave the team, but the Brawlers reconcile with her. In Vestroia, she briefly becomes Masquerade one final time to save Dan and Drago; shattering the mask frees her from Naga’s influence, and she inherits Alpha Hydranoid as her loyal Guardian Bakugan. Post‑redemption, she gains confidence to brawl, defeats Klaus von Hertzon in a practice match, and teams with Klaus and Christopher to overcome the hybrid brawler Rabeeder using the strategic “Trident of Doom” Ability Card. She participates in the final battle against Naga and Hal‑G, suffering injuries while protecting Wavern. After the conflict, she bids farewell to Hydranoid as the Bakugan return to Vestroia.

In New Vestroia, her role diminishes. Alpha Hydranoid is depetrified but held in a bronze statue state within Prince Hydron’s collection. Alice assists from Earth, coordinating with Runo and Julie to test dimension transporters, and shelters Lync Volan despite his deceitful nature. She receives a Darkus Gauntlet from Mira Fermin. Her sole depicted battle is against Shadow Prove, where she resists Masquerade’s psychological taunts to retransform, reflecting her ongoing internal conflict. Later seasons reduce her to cameos, such as appearing in a photograph in Mechtanium Surge. Physically, Alice has waist‑length ginger‑orange hair and hazel‑brown eyes, initially wearing a yellow dress with green accents and later a lavender hoodie with a pink top and yellow skirt.