Naljian

The Naljians are a mysterious race of aliens inhabiting an upper position of existence.

Anatomy
Naljians are alien humanoids who are made of white light and appear to have a blue flame surrounding them.

Lifespan
A Naljian's lifespan seems to be extremely long, with a 3 million-year-old Naljian being considered a mere child by their standards.

Powers and abilities
Naljians possess enhanced intelligence, even more than the Galvan.

Naljians can teleport on a dimensional scale, being able to see in more than three dimensions. This allows them to see the true form of a Contemelia.

Naljians possess telekinesis, as one was able to rebuild a children's toy without touching the pieces.

Culture and society
According to the one Ben Tennyson met, there are "only 26 [dimensions] that matter" to the Naljians, implying that they have a low opinion of most other universes.

Technology
Naljians are extremely advanced in technology, as a children's toy built by them easily surpassed Level 20 technology such as the Omnitrix.