Lyde has shaggy blonde hair, piercing blue eyes, and pale skin. He consistently wears a torn white shirt featuring three prominent zippers down the front and sports piercings on his left ear. His closest bond is a deep childhood friendship with Ritchie, built on years of unwavering companionship and mutual trust. Lyde's connection to Nir begins when she seeks his help repairing her Amp. After he successfully fixes it, they become partners operating mecha equipment together. This partnership strengthens significantly when Nir retrieves Lyde's crucial notebook from his employer, earning profound admiration from both Lyde and Ritchie.

Lyde becomes directly involved in the central conflict surrounding Mu and Echo Rec. During a critical incident, Mu—acting under external manipulation and influence—unintentionally causes Lyde's death. Nir witnesses this event firsthand. Lyde's demise serves as a pivotal catalyst, escalating narrative tensions. It fundamentally ignites Nir's profound resentment towards Mu and powerfully influences subsequent character motivations driving the storyline.