Barbalala is a vibrant green member of the Barbapapa family, one of seven children born to Barbapapa and Barbamama. Like her family, she possesses the innate ability to shapeshift at will, maintaining her unique green hue and distinctive facial features regardless of form. Her character portrayal remains steady across adaptations, including "Barbapapa Around the World."

Music defines Barbalala. She exhibits deep passion and proficiency for playing a wide array of musical instruments, a core aspect of her identity. She also shares a strong interest in botany and ecology, aligning with her brother Barbazoo's love for nature and animals.

Her temperament is consistently peaceful, dreamy, and gentle. She rarely displays anger and maintains a cooperative nature. During the family's global travels, she actively observes and interacts with diverse wildlife and environments, encountering sea otters, penguins, and elephants, experiences that fuel her ecological interests.

While the available narratives detail no significant personal evolution or standalone backstory, Barbalala functions as an integral part of the family unit. Her interactions during their journeys highlight her supportive role and consistent personality. She often uses her shapeshifting ability to aid her family or engage with the natural world during adventures.

Visually, Barbalala is distinguished by her green color. She wears a flower on her head, a tertiary sexual characteristic consistent with female Barbapapas, and has eyelashes. She wears no other accessories.