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|“||How do I stop this thing? I'm a thinker, not a fighter! Think...think...||”|
Ben as Grey Matter
Grey Matter is a grey-skinned, frog-like, bipedal alien that is only four inches tall with large green eyes, which have rectangular pupils and horizontal eyelids.
In the Original Series, Grey Matter wore a white jumpsuit with a thin vertical black stripe down the front, his eyes were yellowish-green, his forehead had a larger version of the jumpsuit's stripe, and the original Omnitrix symbol was on his back.
In Omniverse, Grey Matter now has a green jumpsuit with a black belt. His suit collar is now black, and the stripe on his head and jumpsuit are no longer present. He wears black, fingerless gloves with a green rectangle on the back. His neck is slightly longer, and his Omnitrix symbol has returned to his back.
11-year-old Grey Matter in Omniverse looks exactly the same as he did in the Original Series except his collar is black, his eyes are green, and his skin tone is slightly different.
Gwen as Grey Matter
Gwen as Grey Matter had Gwen's hair and more oval-shaped eyes, with much smaller pupils. She wore a light blue jumpsuit with dark blue sleeves, and the Omnitrix symbol was on her back. She lacked the stripes Ben's Grey Matter has.
Ken as Grey Matter
Ken's Grey Matter looked the same as 10-year-old Grey Matter in the Original Series.
Powers and Abilities
Grey Matter's small size belies his great calculative and technical intellect. He can create complicated machines from spare parts, understand the function of any device at a glance, and make sophisticated repairs to complex machines (such as a warp-drive engine).
Grey Matter's intellect serves as a problem solver and analytical help in difficult situations. This allows Grey Matter to think more strategically when brute force is inefficient. In fact, Grey Matter is smart enough to know how to unlock the original Omnitrix's Master Control, something only Ken has demonstrated.
Grey Matter can sometimes manipulate living things by stimulating certain parts of their nervous system if such beings can be controlled by external stimuli.
Grey Matter's size allows him to squeeze into small spaces and can climb walls due to microscopic pads on his skin.[pop-up 2] He also has sharp teeth that can cause pain to those he bites, as well as slimy skin that makes him difficult to grab.
Grey Matter was the weakest alien in the Original Series due to his minuscule size, but he compensated with his intellect and efficient technological and calculative skills.
Grey Matter's intelligence is not limited to technology and biology, as he is smart in general. Even if he does not know something, he can learn it very quickly.[DJW 1]
Grey Matter has a long prehensile tongue, owing to his insectivore nature, as demonstrated with Blukic. As a Galvan, he also possesses a 'pre-brain' which deals with all basic bodily functions.
Grey Matter's small size makes him unsuitable for physical battle, so he must outsmart his enemies in a fight. Animals like dogs and cats can be a problem, as they may see Grey Matter as a chew toy or food to them.
Despite possessing immense intelligence, Grey Matter can still make miscalculations, as his attempt to upgrade the Rust Bucket's air conditioner caused it to overheat instead, incapacitating the vehicle.
According to himself, Grey Matter sometimes does not know what he is talking about.
Grey Matter does not know everything, as seen when he (initially) did not know which galaxy his species is from.
- Grey Matter first appeared in Washington B.C., where he searched through a whole aisle of cereal boxes for a Golden Sumo Slammers card.
- In Hunted, Grey Matter defeated Kraab and SixSix.
- In A Small Problem, the Omnitrix malfunctioned, trapping Ben as Grey Matter for most of the episode.
- In Secrets, Grey Matter defeated one of Vilgax's Mechadroids before the malfunctioning Omnitrix turned him into Upgrade.
- Also, Grey Matter appeared as one of the many alien templates used for Vilgax's army in an imaginary sequence.
- In Truth, Grey Matter defeated a Null Guardian and sent Phil to the Null Void.
- In Grudge Match, Grey Matter disabled the alien prisoners' shock implants, looked for the escape pod controls and defeated some of Slix Vigma's drones with Kevin 11.
- In Ghostfreaked Out, Grey Matter fought the Circus Freak Trio and hid from Zs'Skayr.
- In Ultimate Weapon, Grey Matter snuck into a building and helped Gwen and Max to get in. He then opened a safe to retrieve the Mask of Ah Puch and escaped from Enoch and the Forever Knights.
- In They Lurk Below, Grey Matter saved a drowning man from some sharks.
- In Back with a Vengeance, Grey Matter appeared about eight times. Firstly, he appeared when Ben unlocked the Master Control. Then, he appeared in a photo. Later, Grey Matter escaped from Vilgax's grip while he and Kevin 11 where arguing. In the Null Void, Grey Matter was used several times to evade Vilgax and Kevin. At the end of the episode, Ben accidentally transformed into Grey Matter, having just remembered that the Master Control was once again locked.
- In Midnight Madness, Grey Matter was hypnotized into being Gwen's slave.
- In Merry Christmas, Grey Matter accidentally destroyed the Rust Bucket's air conditioner and later (intentionally) destroyed the Jinglelator.
- In The Unnaturals, Grey Matter stopped some thieves from stealing the Liberty Bell and won an MP3 player in a contest.
- In Be Afraid of the Dark, Grey Matter evaded Zs'Skayr and Viktor, explained the former's plan to Max and Gwen, and built a Sun Gun.
- In Ben 10: Secret of the Omnitrix, Grey Matter attacked Dr. Animo with a hoverboard and crawled into his vest.
- In Perfect Day, Grey Matter defeated a mutated Cash and J.T. in a dream.
- In Ben 10: Destroy All Aliens, Grey Matter escaped Retaliator and ran back to his house, where he was attacked by Carl and Sandra before the Omnitrix switched him into Diamondhead.
- In Snack Break, Grey Matter attempted to retrieve his snack in a vending machine, but reverted before he could grab it and, as a result, got stuck in the machine.
- In So Long, and Thanks for All the Smoothies, Grey Matter stopped the Vreedle Brothers from shooting at him and Rook.
- In Have I Got a Deal for You, Grey Matter was part of an accidental transformation chain along with Juryrigg, Nanomech, and Bloxx.
- In Of Predators and Prey: Part 2, Grey Matter defeated Tyrannopede.
- In Rad, Grey Matter repaired Rad's ship so he and the team could escape.
- In And Then There Was Ben, No Watch Ben as Grey Matter disabled the shields on the Chimeran Hammer during the events of And Then There Were 10.
- In It's a Mad, Mad, Mad Ben World: Part 2, Grey Matter and Brainfrog repaired each other's Omnitrices.
- In A New Dawn, Grey Matter appeared for a short time when Ben was cycling through his aliens.
- Prior to Ken 10, Grey Matter was among the intelligent aliens used by Ben 10,000 to create an Omnitrix for his son's 10 birthday.[pop-up 3]
- In Ken 10, Ken as Grey Matter escaped his room to help his father battle Devlin 11 before suddenly timing out. Later, Ken as Grey Matter unlocked the Master Control offscreen before confronting Kevin 11,000 and switching into Spitter to attack him.
(Gwen 10) What-If?
- In Ben 10: Race Against Time, Grey Matter rewired various machines in Mrs. Dalton's diner to throw various food at all the customers.
- In Ole!, Grey Matter rode mechanical bull for a short time.
- In Techno Zombies, Grey Matter escaped the possessed children.
- In Blast from the Past, Grey Matter defeated Groombah, Slezak and Honch.
- In Space Camp and Beyond, Grey Matter deciphered the code inside the alien.
- In Charmed to Beat You, Grey Matter defeated Hex.
- In Captured!, Grey Matter fooled the criminals.
- Season 1
- Season 2
- Truth (selected alien was Four Arms)
- Grudge Match
- Ghostfreaked Out
- Ultimate Weapon
- They Lurk Below (selected alien was Ripjaws)
- Back with a Vengeance (x8; last time was an accidental transformation)
- Season 3
- Midnight Madness (under hypnosis)
- Merry Christmas (x2; second time selected alien was Four Arms)
- The Unnaturals (selected alien was XLR8)
- Be Afraid of the Dark (accidental transformation)
- Season 4
- Ben 10: Secret of the Omnitrix (selected alien was Stinkfly)
- Ben 10: Race Against Time (Race Against Time Timeline; selected alien was Four Arms)
- Ben 10: Destroy All Aliens
- Season 2
- Gwen 10 (non-canon)
- Season 4
- Ken 10 (x2)
- Season 1
- So Long, and Thanks for All the Smoothies (first reappearance; intended alien was Rath)
- Have I Got a Deal for You (accidental transformation; cameo)
- Of Predators and Prey: Part 2 (intended alien was Way Big)
- Season 3
- Season 7
- Season 8
- A New Dawn (cameo)
- No Watch Ben
- Season 5
- Cartoon Network Action Packs
Grey Matter is a playable alien in the game.
Naming and Translations
|Albanian||Materia Gri||From materia gri, materia (matter) and gri (grey)|
|Arabic||جراي ماتر||From ماتر, matter, and جراي grey|
|Bulgarian||Сиво Вещество (Civo Veshtestvo)||From сиво (civo), grey and вещество (veshtestvo), matter|
|Chinese||小奇兵||From 小 (Xiǎo), little, and 奇兵 (Qí Bīng), soldier|
|Croatian||Siva Tvar||From siva, grey, and tvar, matter|
|Danish||Grå Substans||From grå, grey, and substans, matter|
|Dutch||Grijze Massa||From grijze, grey, and massa, matter|
|Finnish||Harmaa Haitta||From harmaa, grey, and haitta, disadvantage|
|French||Le Tétard Gris||From gris, grey, and tétard, tadpole|
|Greek||Γκρίζα Ύλη||From Γκρί, gray, and ύλη, matter|
|Hebrew||תא אפור||From תא, cell, and אפור, grey|
|Hungarian||Ragacska||From ragacs, putty|
|Italian||Materia Grigia||From materia, matter, and grigia, grey|
|Japanese||グレイマター||From グレイ (gurei), grey, and マター (matā), matter|
|Korean||미니그레이||From 미니, mini, and 그레이, grey|
|Norwegian||Gråbarken||From grå, grey, and barken, bark|
|Polish||Szara Materia||From szara, grey, and materia, matter|
|Portuguese (Br)||Massa Cinzenta||From massa, mass, and cinzenta, grey|
|From cerebel, cerebellum|
From materie, matter, and cenusie, grey
|From Инопланетянин, alien|
From Гуманойд (gumanoyd), humanoid
|Serbian||Сива Материја (Siva Materija)||From сива (siva), grey, and материја (materija), matter|
|Spanish (HA)||Materia Gris||From materia, matter, and gris, grey|
|Spanish (Spain)||Materia Gris||From materia, matter, and gris, grey|
|Swedish||Grå Dvärgen||From grå, grey, and dvärgen, dwarf|
|Turkish||Gri Madde||From gri, grey, and madde, matter|
Grey Matter is named after grey matter, one of the components of the central nervous system.
- Grey Matter is Ben's smartest alien.[DJW 3][DJW 4]
- Grey Matter was Derrick J. Wyatt's favorite Omnitrix alien.[DJW 4]
- Grey Matter is the second smallest alien in Ben's arsenal; the overall smallest being Nanomech.
- Grey Matter is stated to be about 6 inches (15.24 cm) tall.
- Grey Matter's DNA was the first DNA sample added to the Omnitrix.[DJW 5] However, it came from neither Azmuth nor Albedo.[DJW 6]
- Grey Matter's voice has changed over the course of his appearances:
- 11-year-old Grey Matter is replaced with 11-year-old Ripjaws in the opening intro of Omniverse's Arc 5, specifically in the part where the former originally appeared alongside the 11-year-old versions of Four Arms, Eye Guy, and Snare-oh.
- 11-year-old Grey Matter was not necessarily planned to appear in Omniverse flashbacks.[DJW 7]
- A running gag in the Original Series was that Ben turned into Grey Matter unintentionally in situations where his small size would be disadvantageous.
- When Grey Matter gets surprised, his rectangular pupils turn into very large squares.
- Grey Matter, Juryrigg, and Feedback are the only aliens with their own theme song.
- Grey Matter is the first alien to stay in a whole episode due to an Omnitrix malfunction; the second being Rath.
- Grey Matter was first envisioned by Steve E. Gordon as a stereotypical Area 51 grey alien, with a huge head and giant pupil-less eyes, wearing a black full-body latex suit that covers everything up to his chest. Dave Johnson initially designed him similar to that design, but since the concept was deemed to be scary for kids, Dave decided to go with a frog-like design instead.
- Grey Matter's Omniverse design was made by Derrick.[DJW 8]