Garra Longa is an alien owl who serves as a guardian and parental figure within the Sonic the Hedgehog film universe. She is most prominently featured in flashbacks and recorded messages, having played a crucial role in the early life of Sonic before the events of the main story.

In terms of appearance, Garra Longa is an anthropomorphic owl with a design that leans towards a more realistic portrayal than other characters. Her body is covered in brown and purple feathers, while her face is distinguished by white feathers and blue eyes. She has a short, curved black beak and notable feather tufts that resemble those of a long-eared owl. For attire, she wears a suit of golden armor with intricate engravings, which covers the front of her torso and is secured by a collar and straps.

Regarding her personality, Garra Longa is defined by her unwavering loyalty and her willingness to sacrifice herself for those she cares about. She is a devoted guardian, deeply committed to protecting Sonic. However, she also displays a more cautious and concerned demeanor, often becoming frustrated with Sonic's youthful recklessness and his overconfidence in his incredible speed, which leads him to ignore her advice to hide his powers.

Her primary motivation is the safety of Sonic. She understands that powerful forces, specifically a tribe of echidnas, seek to capture Sonic and exploit his abilities. To protect him from this threat, she makes the ultimate sacrifice. Her actions are driven by a deep sense of duty and love, compelling her to send Sonic away to Earth for his survival while she faces the attacking echidnas.

Within the narrative, Garra Longa's role is foundational. She is the guardian who raises a young Sonic on his home planet. After her apparent death fending off the echidna tribe, her influence continues to drive the plot. She provides Sonic with a bag of rings capable of creating dimensional portals, enabling his escape to Earth. Later, she leaves behind a holographic message that is activated by Sonic. In this recording, she reveals the existence and location of the Master Emerald, tasking Sonic with protecting it from those who would misuse its power. This message serves as the primary catalyst for the main adventure in the second film.

Her key relationships are central to the story. Her bond with Sonic is the most significant, as she is his surrogate mother and protector. This relationship shapes Sonic's core values and his sense of loss. She is also the adversary of the echidna tribe, who are the primary antagonists hunting her and Sonic for his power. Notably, the character Tails visits Garra Longa's abandoned home out of respect, seeking clues about Sonic's whereabouts, which highlights her lasting impact even after her death.

Garra Longa does not undergo development during the films, as her story is largely in the past. Instead, her legacy and the lessons she imparted influence Sonic's development. Her holographic message serves as a final piece of guidance, urging Sonic to embrace a more responsible role as a guardian of the Master Emerald, a direct continuation of her own protective mission.

Her notable abilities include flight, using her powerful wings to carry a young Sonic with significant agility. Her most crucial ability, however, is her possession of and knowledge about the special rings that can create portals to other dimensions. It is unknown if she forged these rings herself or if they were given to her. She demonstrates the ability to open portals, specifically one to Earth, to ensure Sonic's safety.