Darry Adai is a character who appears in the anime Gurren Lagann, originating from the underground village of Adai. She is the twin sister of Gimmy Adai, and together they were orphaned at a young age, with their parents having been exiled from the village. Early in the story, both children are chosen to be sent to the surface as part of the village's population control measures, a fate from which they are accompanied and cared for by Rossiu Adai.

Physically, Darry is initially presented as a short young girl with light pink hair and blue eyes, typically seen clinging to a plush doll. Her personality at this stage is defined by her being very shy, reserved, and quiet, a stark contrast to her more outgoing and impulsive brother. Following a seven-year timeskip in the narrative, Darry matures into a teenage girl of average height with a darker shade of pink hair, often seen in a red and white uniform. More significantly, her personality evolves, and she becomes much more confident, leaving her former shyness behind. While still less talkative than Gimmy, she emerges as the more rational of the two, demonstrating careful, calm, and perceptive qualities, and putting more thought and planning into her actions.

Darry's role in the story begins as a minor member of Team Gurren, often serving as comic relief from the back of the Gurren mech. As the series progresses into its second half, she and her brother join the Grapearl Army of Kamina City, becoming pilots of mass-produced mechs known as Grapearls, which were developed from Gunmen technology. During the conflict against the Anti-Spiral, Darry actively participates in defending the city and fighting in space battles, showcasing her development into a capable soldier. Her competence in combat is notable; she saves her brother from enemy fire, works with him to apprehend Viral, and protects the city during evacuations. In the epilogue, Darry is seen as a commander of the Grapearl squadron and, alongside her brother, becomes one of the new pilots of the legendary mech, Gurren Lagann, following Simon's retirement.

Her key relationships are primarily with her twin brother Gimmy, to whom she shares a strong bond, and with Rossiu, who acted as her caretaker in their childhood. As members of Team Dai-Gurren, she also develops a relationship with the team's leader, Simon, who eventually entrusts her and Gimmy with the controls of Arc Gurren-Lagann during a critical battle. This trust underscores her development from a quiet, background child to a trusted and skilled pilot. Notably, Darry is also distinguished as a skilled pilot, often described as being more cautious and technically proficient than her more impulsive brother. In the final battle, she demonstrates significant fighting spirit, piloting her Grapearl and later contributing her Spiral Power to the creation of the colossal Tengen Toppa Grapearl, a mech manifested from her thoughts and willpower.