Utroms

The Ultrom is a small, light alien. They are usually pink, but there are also yellow, orange, and red ones. They look like a human brain. They have eyes, a mouth with sharp teeth, no nose, and a number of tentacles. The tentacles serve as both hands and feet. However, most Ultrom dislike walking, preferring to use an human-shaped exosuit or a hover pad. Unless injured or diseased, Ultroms have a long lifespan, lasting centuries or millenia in Earth years.

Ultroms are extremely peaceful and non-interfering.

History
The Ultrom have appeared in both the comic and the 2003 cartoon series. They were not present in the 1987 cartoon. Krang looks like an Ultrom, but is really just a disembodied brain.

Comics
The Ultroms were stranded on Earth and interacted with humans through the company, TCRI. They are responsible for creating and losing the canister of mutagen that transformed Splinter and the Turtles. When they were stranded, the Ultroms contacted their homeworld. They were ordered to stay and observe humanity. Eventually, they were forced to leave Earth by teleporting to another world. They later returned and opened official relations with humans and other alien races.

2003 Series
Seven hundred years ago, a ship transporting the dangerous criminal Ch’rell crashed on Earth due to sabotage. Landing in feudal Japan, the ship was damaged beyond repair and Ch'rell escaped in the confusion.

The Ultroms decided to disguise themselves as humans and wait until humans developed the technology needed to go back home. To hide, they developed human-shaped exosuits and revealed themselves to a select few humans who they named their guardians. Centuries later, Hamato Yoshi would become a guardian. The Shredder would kill him in an attempt to find the Ultrom's location.

At the present, the Ultroms operate through TCRI. The company's official business is never revealed, but it serves as a place to hide their advanced technology, such as the Transmat and the Oracle Pod. TCRI is also responsible for the mutagen that transformed the Turtles and Splinter.

The Ultrom later helped the Turtles with the Shredder. Thirty seconds before the Shredder's ship blew up, they put the ship in a stasis field and used the TransMat to transport everyone out. On their homeworld, Shredder stood trial and was sent to an icy asteroid prison.

Notable Ultroms

 * Ch’rell
 * Council of Three
 * Dr. X
 * Glurin
 * Korobon
 * Krang (Brief cameo in the 2003 series)
 * Mortu
 * Professor Obligado
 * Slashuur