TV-Series
Description
Petra Ral attends Attack Junior High School as a second-year student and actively participates in the unauthorized Survey Club, influencing its activities and decisions about new members. She has short, light hair with bangs swept left and wears the standard uniform: a white blouse under a dark sweater with a dark skirt. Alternative outfits include a yellow vest with a green bow over a white long-sleeved shirt and a blue skirt.

Cheerful and kind, especially welcoming first-year students, Petra nevertheless shifted markedly in demeanor with classmate Oluo Bozado, displaying impatience and occasional violence like kicking him in the stomach or showing indifference to his self-inflicted injuries. She often acted as an older sister figure to others.

Petra played a significant role in club operations, mocking Oluo after Eren slammed a door on his head during a new member meeting and stressing the requirement for unanimous approval from the club heads. She later welcomed returning heads Hange and Mike, assisting in introducing prospective members and sharing group reactions, such as disgust when Hange displayed Titan nail clippings. She competed against first-years in Sports Day team activities. After her team lost due to opponent rule violations, she and fellow second-years deliberately extended sportsmanship by helping Eren's group, citing their own first-year experiences.

She joined thematic school activities, disguising herself as the Mona Lisa for a first-year courage test and attending the school festival. There, she waited in line with classmates for food stands and forcibly silenced Oluo by shoving a cheeseburger into his mouth. During crises like Titans disrupting the festival, she followed Levi's orders and later appeared emotionally affected seeing Eren emerge from the Colossal Titan.

Petra's relationship with Oluo involved frequent friction due to his boastful personality and attempts to imitate Levi. Despite this tension, they maintained a close working dynamic within the club. She held Levi in high regard, reacting sharply to Oluo's mimicry of him.