Ultimate Echo Echo

Ultimate Echo Echo is the evolved form of Echo Echo in Ben 10: Ultimate Alien. At this point, he is the only KNOWN Ultimate form that remains unseen.

Appearance
He is now blue with speaker like components attached to his body, an overall rounded design, and with longer arms and legs. There is also no sign of his power control pack, the power control symbols ("I" on, and "O" off), and the cassete-like tapes on Ultimate Echo Echo. His voice has also been changed to resemble more that of a human voice, than a robotic one. He is also taller.

Abilities
He can shoot sonic discs, sonic blasts of a higher frequency, and self-duplicate himself at a much faster rate than Echo Echo. He can also move faster than Echo Echo. A silicon-based life Sonorosian from the planet Sonorosia whose body is a living amplifier. He can scream at ultrasonic frequencies capable of overloading machinery and stopping projectiles in mid-flight. He can duplicate himself, use echolocation, even form an impressive Wall of Sound. Through the Ultimatrix, Echo Echo becomes a taller blue version of himself with green eyes, can shoot sonic discs and can use a stronger soundwave.

Trivia

 * Of all the Ultimate forms, Ultimate Echo Echo took the longest to guess who it was.
 * In the Cosmic Destruction previews, it seems Ultimate Echo Echo is capable of flight, however this could just be him gliding, or him half-way in the air in the middle of a jump.

Normal form

 * Echo Echo