Gluto

Gluto is a Protost who debuts in Ben 10: Secret of The Omnitrix.

Powers and Abilities
Gluto can shapeshift to a degree, which comes in handy when piloting a ship that requires at least three arms to run properly.

Gluto has regenerative capabilities.

Equipment
Gluto owns a Universal Translator.

Original Series
In Secret of the Omnitrix, Gluto debuted as the pilot of The Resolute. In the episode, he develops a friendship with Gwen. He at some point tries to fight Vilgax and fails, presumably perishing in the process. He is later revealed to still be alive, but he sacrifices his life for Gwen. Gluto later saved Gwen's life after she was kidnapped by Florauna on Xenon, revealing his regenerative capabilities from miniscule remains of his body on Gwen's clothes.

Ben 10

 * Ben 10: Secret of the Omnitrix (first appearance)

Trivia

 * Gluto is very similar to Goop in terms of powers, as both are made of a similar material. However, unlike Goop, Gluto does not have feet, is pink, and does not need an Anti-Gravity Projector to move.
 * Apparently, Tetrax doesn't know that much about Gluto and his species based on the fact that Tetrax didn't know Gluto had a Universal Translator or that Gluto could regenerate.