Echo is a young boy who has black hair and dark eyes. He wears a loose white shirt with baggy orange overalls.
A boy that lives with his older sister, Swell Rec, in the scrap town of Liverchester. Since witnessing the legendary Jimi Stonefree at the Project Freedom Festival (Fes) ten years ago, he has longed for Players. He has made his own AMP that summons mecha equipment to fight with. Despite his timid personality, he has a passion for equipment. One day he meets a girl with amnesia and names her µ.
- His name is a reference to the Binson Echorec, an echo effect famously used by English rock band Pink Floyd.