Echoes

the echoes may be just like their appearing out of no where... its just another random anomaly of their existence. Maybe its that they themselves are just an echo. So... an echo is brought into existence by whoever or whatever makes a sound and then it exists only to carry that sound for a while and then it fades away as the sound does. Although people notice it while it is echoing, they are totally unphased when the sound is gone. in the same way R and G are brought into existence only by Claud's word and then once he is gone so are R and G.