Pegatrix, a Haos-aligned pegasus-unicorn Bakugon hybrid, carries herself with regal authority, embodying her self-proclaimed title as the "queen of Bakugan." Initially serving as guardian to Lia Venegas, she forges a partnership rooted in mutual growth, defying traditional hierarchies to redefine power dynamics through collaboration. Her personality merges battle-hardened determination with a refined appreciation for elegance and tranquility, positioning her as both a mentor and a figure learning adaptability through her bond with Lia.

Her debut occurs during a pivotal clash, where she intervenes to rescue Drago from adversaries, later uniting with Gorthion to shield allies from corrupt forces. This cements her role as a protector within The Awesome Ones, dedicating her efforts to thwarting organizations like the Exit Team and AAAnimus. Her dynamic with Lia transitions from ideological friction to a harmonized alliance, emphasizing reimagined ideals of feminine strength and resilience.

Combat prowess centers on luminescent assaults such as "Wing Cutter" and restorative abilities like "Revitalize," bolstered by transformative stages: Hyper Pegatrix amplifies raw power, while Strength Mode prioritizes brute force and Speed Mode enhances agility. Temporarily sidelined by Fenneca during a geogan-related arc, she ultimately reclaims her position as Lia’s primary partner.

Narrative progression highlights exposure to anomalous energies during the second Great Collision, triggering adaptive physical and tactical shifts. Her journey further involves balancing innate authoritative tendencies with cooperative problem-solving, mirroring her team’s overarching emphasis on unity and strategic flexibility.