Big Chill

Big Chill is the Omnitrix's DNA sample of a Necrofriggian from the planet Kylmyys.

Ben as Big Chill
Big Chill is a humanoid, moth-like alien whose four wings and antenna can fold up into a hooded robe (much akin to a poncho), giving him the appearance of a phantom.

Big Chill has a blue body with black and white spots on his arms and legs that resemble ice chunks, a light blue torso, and large green eyes. He has three pointed fingers and a thumb on each hand, and two toes on each foot and a third toe-like extension on his ankles. Big Chill wears the Omnitrix/Ultimatrix symbol on his chest.

In Heroes United, he has a paler color scheme. The spots on his body are not symmetrical. He also has five fingers instead of four and they are less pointed.

In Omniverse, Big Chill has a much more muscular build, also now having larger eyebrows and sharper ears. He has a belt on his waist where the Omnitrix symbol is located. He has bigger wings, claws, and a black beard design under his chin. 15 year old Big Chill in Omniverse looks exactly the same, but he lacks the belt and the Omnitrix symbol is on his chest.

Albedo as Negative Big Chill
In Alien Force and Ultimate Alien, Negative Big Chill looked just like Big Chill, but in Ultimate Alien, he has red eyes. In Omniverse, Negative Big Chill looks just like Big Chill in Omniverse, but has a paler color scheme, a red belt, and red eyes.

Powers and Abilities
Big Chill is capable of breathing a freezing vapor that reduces the temperature surrounding the vapor, encasing targets in ice. He can generate ice beams from his hands that he can manipulate. In Ben 10 Alien Force: Vilgax Attacks, Big Chill was capable of generating spiked balls of ice around his fists, as well as hurling ice spikes. He could also cause these spikes to sprout from the ground that surrounds him. In Cosmic Destruction, it was revealed that he can attack with an, "icy uppercut," as well as manipulate the cold around him to make a frosty tornado.

Big Chill's body contains a density-altering protoplasm that allows intangibility.

Big Chill has enhanced strength. In Save the Last Dance, when Big Chill was on a metal-eating spree, he effortlessly ripped apart a large metal statue and snapped iron girders in half. This strength also extends to his jaws, as Big Chill was capable of chewing up metal statues, poles, buildings, signs, iron girders, serving trays, and drinking molten steel.

Big Chill is completely immune to extreme subzero temperatures and extreme heats.

It was revealed in Deep that Big Chill can survive underwater.

Big Chill can also survive in the vacuum of space.

Weaknesses
Big Chill's intangibility is useless against opponents who can also turn intangible, as their intangibility cancels out. The only known inanimate objects that have proven to physically contact intangible Big Chill are the Rust Bucket's netting, Vilgax's glove, and the Techadon Robots' defense systems.

Big Chill's intangibility is consciously used, not reflexively, which means he can't use his intangibility if he is caught off guard.

Big Chill's ice breath is useless against Hypnotick and other Psycholeopterrans.

Big Chill's wings are weak against electricity.

Ben

 * Big Chill first appeared in Kevin's Big Score,
 * where he chased Kevin in the Rust Bucket.
 * Later, Big Chill destroyed Vulkanus' armor.
 * In Max Out,
 * Big Chill battled some DNAliens.
 * In Plumbers' Helpers,
 * Big Chill saved a man from fire.
 * In Alone Together,
 * Big Chill tried to help Reinrassic III cool down and defeated a Dravek.
 * In Good Copy, Bad Copy,
 * Big Chill chased Gwen and Kevin.
 * In Save the Last Dance,
 * Big Chill was taken over by his reproduction instincts and had 14 Necrofriggian babies.
 * In Voided,
 * Big Chill defeated D'Void.
 * In Birds of a Feather,
 * Big Chill made an appearance.
 * In Ben 10: Alien Swarm,
 * Big Chill battled the Nanochips.
 * In Vengeance of Vilgax: Part 2,
 * Big Chill was defeated by Vilgax.
 * In Inferno,
 * Big Chill captured Moldywarp.
 * In Fool's Gold,
 * Big Chill battled primal Decka .
 * In Singlehanded,
 * Big Chill, with only one hand was in the Null Void.
 * In Trade-Off,
 * Big Chill and Gwen battled the Forever Knights.
 * In Above and Beyond,
 * Big Chill defeated Alan.
 * In The Final Battle: Part 1,
 * Big Chill battled Kraab.

Albedo

 * In Good Copy, Bad Copy,
 * Negative Big Chill battled some Forever Knights.

Ben

 * Big Chill returns to Ultimate Alien in Duped.
 * Big Chill was used by one of the three Bens to battle Urian.
 * In Hit 'Em Where They Live,
 * Big Chill battled Vulkanus' soldiers before going Ultimate.
 * In Video Games,
 * Big Chill tried to defeat the Stalker but failed.
 * In Escape from Aggregor,
 * Big Chill battled Galapagus before going Ultimate.
 * In Too Hot to Handle,
 * Big Chill battled P'andor.
 * In Ultimate Aggregor,
 * Big Chill goes Ultimate.
 * In Map of Infinity,
 * Big Chill battled some Albino Necrofriggians.
 * In Deep,
 * Big Chill chased Ultimate Aggregor before going Ultimate.
 * In Absolute Power: Part 2,
 * Big Chill battled Ultimate Kevin.
 * In Viktor: The Spoils,
 * Big Chill tried to keep Viktor frozen and went Ultimate.
 * In It's Not Easy Being Gwen,
 * Big Chill battled Dr. Animo and his mutant frog.
 * In Prisoner Number 775 is Missing,
 * Big Chill searched through an alien prison in Area 51.
 * In Greetings from Techadon,
 * Big Chill failed to get into a Techadon ship.
 * In The Flame Keepers' Circle,
 * Big Chill tried to save Julie.
 * In The Mother of All Vreedles,
 * Big Chill battled Ma Vreedle.
 * In The Eggman Cometh,
 * Big Chill froze the mutated reptiles.

Albedo

 * In Night of the Living Nightmare,
 * In a dream, Negative Big Chill froze Ben, but he broke out.

Ben

 * Big Chill returned to Omniverse in Of Predators and Prey: Part 2.
 * ​Big Chill saved Rook from Khyber's Ship.
 * In Malefactor,
 * Big Chill battled Hypnotick.
 * In Ben Again,
 * Big Chill was used by 11 year old Ben to find coordinates.
 * In Special Delivery,
 * In a flashback, fifteen year old Big Chill froze a DNAlien, accidentally freezing Mr. Baumann's car at the same time.
 * In Showdown: Part 1,
 * Ben turned into Big Chill to escape Terroranchula's web and freeze Zed, but was hypnotized by Hypnotick three times.
 * In Tummy Trouble,
 * Big Chill battled some Incurseans.
 * In The Frogs of War: Part 1,
 * Big Chill froze Milleous.
 * In The Ultimate Heist,
 * ​Big Chill tried to get out of a Plumber prison but failed.
 * Later, he escaped from Blukic and Driba.
 * In Something Zombozo This Way Comes,
 * Big Chill was used to freeze the Zombie Clowns in their place.
 * In Let's Do the Time War Again,
 * Big Chill froze Exo-Skull and Subdora.
 * In A New Dawn,
 * Big Chill appeared for a short time when Ben was cycling through his aliens.

Albedo

 * In The Ultimate Heist,
 * Negative Big Chill froze Techadon Weapon Master Number 13.

Specials

 * In Ben 10-Generator Rex: Heroes United,
 * Big Chill was used three times as Ben's primary flight alien and fought Alpha.

Appearances
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Ben

 * Kevin's Big Score (x2; first appearance, second time was off-screen transformation)
 * Max Out
 * Plumbers' Helpers
 * Alone Together
 * Good Copy, Bad Copy
 * Save the Last Dance (x3; second time accidental transformation, selected alien was Jetray)
 * Voided
 * Birds of a Feather
 * Vengeance of Vilgax: Part 2
 * Inferno
 * Fool's Gold
 * Singlehanded
 * Ben 10: Alien Swarm (accidental transformation, selected alien was Spidermonkey)
 * Trade-Off (accidental transformation, selected alien was Humungousaur)
 * Above and Beyond
 * The Final Battle: Part 1

Albedo

 * Good Copy, Bad Copy (x2)

Ben

 * Duped (first re-appearance; used by Echo Echo clone)
 * Hit 'Em Where They Live (goes ultimate)
 * Video Games
 * Escape from Aggregor (goes ultimate)
 * Too Hot to Handle
 * Ultimate Aggregor (goes ultimate)
 * Map of Infinity
 * Deep (goes ultimate)
 * Absolute Power: Part 2
 * Viktor: The Spoils (goes ultimate)
 * It's Not Easy Being Gwen
 * Prisoner Number 775 is Missing
 * Greetings from Techadon (goes ultimate)
 * The Flame Keepers' Circle (goes ultimate)
 * The Mother of All Vreedles
 * The Eggman Cometh

Specials

 * Ben 10-Generator Rex: Heroes United (x3)

Albedo

 * Night of the Living Nightmare (dream)

Ben 10: Omniverse

 * Of Predators and Prey: Part 2 (first re-appearance)
 * Malefactor
 * Ben Again
 * Special Delivery (used by 15 year old Ben in flashback)
 * Showdown: Part 1
 * Tummy Trouble (x; first time accidental transformation, intended alien was Jetray)
 * The Frogs of War: Part 1
 * The Ultimate Heist (x2)
 * Something Zombozo This Way Comes
 * Let's Do the Time War Again (cameo)
 * A New Dawn (cameo)

Albedo

 * The Ultimate Heist}}

Ben 10: Alien Force (Video Game)
Big Chill is a playable alien character.

Ben 10 Alien Force: Vilgax Attacks
Big Chill is a playable alien character.

Ben 10 Alien Force: The Rise of Hex
Big Chill is a playable character.

Ben 10 Ultimate Alien: Cosmic Destruction
Big Chill is a playable alien character. Big Chill can be used for flight. His ice breath can be used to extinguish fire and freeze an object and enemies. His Ultimate form, Ultimate Big Chill is used in a boss battle.

Ben 10: Galactic Racing
Big Chill is a playable racer in this game on all platforms.

Ben 10: Omniverse 2
Big Chill is a playable alien character in the game.

Punch Time Explosion and XL
Big Chill is one of 16 year old Ben's playable aliens.

Online Games

 * Omnimatch
 * Cricket Strike
 * TKO
 * Ben 10: Ultimate Alien - Ultimate Alien Warrior
 * Ben 10: Omniverse - Game Creator
 * Ben 10: Omniverse - Omniverse Collection
 * Primus Override

Ben 10: Alien Force/Ben 10: Alien Swarm

 * 4" Big Chill (Alien Collection)
 * 4" Big Chill (Defender)
 * 6" Big Chill (DNA Alien)
 * 4" Big Chill (Cloaked)
 * 4" Ben 10: Alien Swarm set #2 - includes: Clocked Big Chill (transparent), Nanomech (Defender), Humungousaur (Clear green), and Big Chill (Defender)
 * Bigchill Battle Launcher
 * Big Chill (Deluxe)
 * Alien Creation Goop and Big Chill
 * Big Chill Alien Creature
 * Big Chill Alien Rock

Ben 10 Omniverse

 * 4" Big Chill

Trivia

 * Big Chill's design resembles Mothman.
 * Big Chill's hologram in Alien Force and Ultimate Alien alternates between his robed form and un-robed form.
 * When asked if Big Chill is female, Dwayne McDuffie replied "Sort of".
 * This implies Necrofriggian reproduce asexually.
 * Big Chill is a playable character in Cartoon Network's game TKO. His special moves are the Cold Rush and the Chill Out. His super move is the Ice Quake. His alternate color (when the players choose the same characters) is a darker blue/purple.
 * In the Cartoon Network game TKO, Big Chill is missing his wings, but Ultimate Big Chill has his.
 * Big Chill is the only alien in the opening of Alien Force with their alien hologram shown next to them.
 * Big Chill is the first alien to appear whose mouth does not move when he speaks.
 * Big Chill has many similarities from D.C. Nation's Blue Beetle.