Big Chill

Big Chill is a Necrofriggian alien from the planet Kylmyys.

Ben first transforms into Big Chill during the episode Kevin's Big Score, to chase down Kevin after he stole the Rust Bucket. Big Chill is voiced by Dee Bradley Baker.

Appearance
He is a moth-like alien, Big Chill has an eerie blue skin and green eyes. Big Chill's wings and antennae can fold up into a cloak of sorts

During his reproductive cycle, Big Chill takes over Ben's personality, causing Ben to unwillingly transform into Big Chill to carry out the task of creating a proper nest for the babies. This nest is comprised of metal that has been molten and swallowed by the parent Necrofriggian.

Abilities
A moth-like alien, Big Chill's wings and antennae can fold up into a cloak of sorts, giving him the appearance of a phantom. He can become intangible, fly, has superhuman strength despite his frail appearance, and can breathe freezing vapor. He can also freeze the objects it phases through at his discretion. Counter-intuitively, Big Chill is easily capable of withstanding extreme heat, at one point drinking molten metal directly from a massive smelting cauldron. He can also make ice beams from his hands, as shown in Birds of a Feather and Single-Handed. It is also shown he can control the flows of his ice beams in Above and Beyond, when he is facing off with Alan Albright.

Translations

 * Italian: Gelone / literally "chillblain" but it also sounds like "big freezing cold".
 * Brazilian: Calafrio / Chill

Trivia

 * BigChill_VilgaxAttacks.png Chill is capable of flying with his wings folded, as seen in Vengeance of Vilgax and Duped.
 * Big Chill is one of the three Omnitrix aliens to appear in Ben 10: Alien Swarm, alongside Humungousaur and Nanomech.
 * Big Chill is one of the six ultimate aliens to appear in Ben 10: Ultimate Alien.
 * He seems to have things in common with Ghostfreak, as they are both ghost-like,he is also similer to Articguana.
 * In his Ultimate Big Chill form, Big Chill's intangibility aura changes from blue to red.
 * Big Chill's ice attack varies in episodes from a icy wind to more of a beams of ice.
 * Big Chill can't seem to complete a sentence without making a pun about ice or cold.
 * Big Chill is Ben's second alien (first being Ghostfreak) form that has had his personality take over.

Ultimate Form
Ultimate Big Chill