objectively mystery inc could beat light yagami
even assuming he learns shaggy's real name and the death note works on a dog, ryuk could not kill shaggy with a heart attack. the man's immune to them. so ryuk would have to chase them down and they'd turn a corner and when he catches up to them they're decked out in juggalo makeup and berate him for being late for the show and pull him on stage where the special guest stars icp do a song and spray ryuk with faygo and when he tries to chase scooby and shaggy again he'd slip on the soda.

















