In Alien Force and Ultimate Alien, Echo Echo wore the original Omnitrix/ Ultimatrix symbol on his chest. The headphones are attached to a backpack.
He also wears headphones so he would not be hurt by his own sonic screams. The green circle-shaped indents on the back of Echo Echo's hands are sound holes, and the inside of his mouth is also green with lines that give it the appearance of an amplifier. One of his most noticeable features is a square appendage resembling an MP3 player behind his back with a port on it, decorated with a 10 symbol and what looks like cassette tapes on his lower legs. His body is natural although he strongly resembles a robot, he is neither it nor an animated containment suit. 6.4 Ben 10 Ultimate Alien: Cosmic DestructionĮcho Echo is a small, white humanoid made of silicon.
