Necrofriggian

Necrofriggians are a genderless species of moth-like sapient beings from the planet Kylmyys.

Anatomy
Necrofriggians are humanoid moths with blue skin and blue wings with black markings. Their physical structure is similar to that of a human and have skull-like heads with green eyes.

Necrofriggians from Mykdl'dy retain their Kylmyys cousins' physical structure but have bluish-white skin and light blue eyes.

In Omniverse, Necrofriggians are more muscular and slightly taller, their body frame being similar to a Neanderthal.

Reproduction
Necrofriggians asexually reproduce once every 80 years, devouring metal to use it to build a nest for their eggs. Once the eggs hatch, their offspring fly off into space to feed on solar plasma.

Predator
The Necrofriggians' natural predators are Psycholeopterrans.

Powers/Abilities
Necrofriggians can manipulate ice, such as breathing a cloud of gas that freezes anything caught in it.

Necrofriggians are capable of flight due to possessing a set of wings. They can also breath underwater and survive in the vacuum of space.

Similar to Ectonurites, Necrofriggians can become intangible like ghosts.

Necrofriggians are incredibly strong and durable, despite their frail appearance. They can also withstand extreme cold and heat.

Weaknesses
Similar to Ectonurites, a Necroffriggian's intangibility is consciously used, which means they cannot use this ability while caught off-guard. Similarly, opponents who are also intangible will cancel out each other's intangibility.

Necrofriggians are vulnerable to electricity, such as those generated by a Cerebrocrustacean.

Necrofriggians are especially vulnerable to the hypnosis of a Psycholeopterran.

Behavior
Newborn Necrofriggians have an appetite for metal and will first eat the nest before they instinctively fly to their ancestral homeworld Kylmyys.

Necroffriggians from Mykdl'dy are devoted to sacred objects, the desecration of which they see as sacrilege.

Omnitrix Transformation
The Omnitrix's Necrofriggian representative is named Big Chill, who first appeared in the Alien Force episode "Kevin's Big Score". Big Chill has appeared in almost every subsequent series except the reboot.

The Ben Tennyson of Dimension 23 has an equivalent of Big Chill named Freezeghost, who first appeared in the Omniverse episode "It's a Mad, Mad, Mad Ben World: Part 2".

Big Chill has also been used by Albedo.