Jungle Pocket is a horse girl with short hazelnut hair marked by white streaks and multiple hair clips. Her eyes feature a gradient from moderate orange to soft yellow. She sports several earrings on her right ear and a distinctive leopard-patterned racing outfit: a yellow-and-white cropped jacket over a black crop top with a yellow bowtie, a navy blue skirt with light green suspenders, and mismatched socks paired with heeled boots.

Originally leading a freestyle racing group, witnessing Fuji Kiseki compete professionally inspired her to pursue official racing and become the strongest competitor. Fuji Kiseki is her primary inspiration and mentor, deeply admired by Jungle Pocket; her tail moves noticeably near her idol.

Her personality blends bold self-assurance with underlying loyalty. She uses the masculine pronoun "ore" and openly declares her ambition to be the fastest. Though initially brash, she treasures mementos like banners from friends and licks her lips when excited. Her strengths are adaptability in close groups and climbing; she avoids gloomy topics and mint candy.

Key relationships shape her journey: Agnes Tachyon becomes a fierce rival and psychological barrier after defeating her in the Hopeful Stakes, sparking intense fixation. Manhattan Cafe and Dantsu Flame are classmates and racing rivals, while Narita Top Road is her roommate.

Her story arc centers on the "Beginning of a New Era" film. Enrolling at Tracen Academy under Fuji Kiseki's former trainer, Tanabe, she remained undefeated until losing to Agnes Tachyon. Following Tachyon's injury-related hiatus, Jungle Pocket won the Japanese Derby but then struggled with motivation, leading to losses. Fuji Kiseki intervened, helping her overcome internalized limitations through a one-on-one race. This culminated in Jungle Pocket defeating champion T.M. Opera O in the Japan Cup, finally breaking the illusion of Tachyon always outpacing her. The narrative concludes with her racing alongside peers after Tachyon returns from recovery.