Rock shook his head. He'd heard that more than once before, but it never felt odd to him at all. He could see why others thought so, though. "Dr. Light built me as an assistant for his work in robotics," he explained, a smile on his face as he reminisced about those closest to him. "But more than that, he built me and my sister Roll to be like his children. They've always been there for me, picking me up when I fall, fixing me when I'm damaged, cheering me up when I'm sad... So even if we're not a flesh and blood family, they're still my family, and that's what matters."