Echo Echo is a small white alien whose inner body is made of living sound waves and his outer body is a containment suit. He has headphones and an MP3 player like device on his back with the number 10 on it. He has line like eyes and green circles on his hands. He wears the Omnitrix on his forehead.
- Sonic Sceam
- Echo Chamber
- Wall of Sound
Echo Echos have to go back into one Echo before transforming back or the clones will become multiple personalitites.