Ben 10 Wiki
Ben 10 Wiki
34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity

Oh, man! Diamondhead and Grey Matter? I'm a razor-sharp hood ornament.

– Ben after turning into Diamond Matter.[1]

Diamond Matter[2] is the combination of Diamondhead and Grey Matter's DNA. He cannot be accessed unless the faceplate of the Omnitrix is broken or by using the Biomnitrix.[note 1]


Diamond Matter is slightly bigger than Grey Matter. He has Diamondhead's crystalline skin, as well as the spikes on his back and head, and Grey Matter's eyes and mouth.

Diamond Matter wore a uniform that was white with black cuffs on the left and black with white cuffs on the right, and wore the Omnitrix symbol on his chest.

Powers and Abilities[]

Being part-Petrosapien, Diamond Matter can alter the shape of his limbs like Diamondhead.

Being part-Galvan, Diamond Matter has enhanced intelligence.

Diamond Matter has enhanced durability, as he was able to withstand being slammed into a branch by Heatbat.


Mutant (943)

Small Size

Unlike Diamondhead, Diamond Matter's enhanced strength is reduced due to his size.

Like Grey Matter, Diamond Matter's small size makes him unsuitable for physical battle.


Ben 10[]

  • Diamond Matter first appeared in Dr. Animo and the Mutant Ray, where he battled Heatbat and briefly got eaten, then thrown up by an alligator. He then sliced his way through some swamp trees to clear the gang's airboat's path until he reverted.


Ben 10[]

Season 2[]

Naming and Translations[]

Language Name Origin
Croatian Kristalna tvar From Made of Crystal (Diamondhead's croatian name) and tvar, matter
German Stahlzwerg From Stahlschädel (Diamondhead's german name) and Zwerg, dwarf
Italian Diamante Grigio
Polish Szary Diament From szary, grey and diament, diamond
Portuguese (Br) Diamante Cinzento From diamante, diamond and cinzento, grey
Romanian Cap de Cerebel Head of Cerebellum
Russian Алмаз и Гуманоид From алмаз, diamond and и and, гуманоид, humanoid
Spanish (HA) Diamante Gris From gris, grey; and diamante, diamond



  1. Diamond Matter, Heat Jaws, and Stink Arms are three fusions which were originally created by a broken, prototype Omnitrix. All three fusions are possible with the Biomnitrix, however, they might differ in aspects such as appearance, powers and weaknesses due to the fact that there's no evidence to support the idea that the broken prototype Omnitrix creates fusions the same way as the Biomnitrix.


  1. Dr. Animo and the Mutant Ray
  2. End credits of Dr. Animo and the Mutant Ray; file

Crew Statements[]

Thomas Perkins[]

Introduced in Ben 10 ArctiguanaBlitzwolferBuzzshockCannonboltDiamondheadDittoEvil Way Big (Destroy All Aliens)Eye GuyFour ArmsFrankenstrikeGhostfreakGrey MatterHeatblastRipjawsSnare-ohSpitterStinkflyUpchuckUpgradeWay BigWildmuttWildvineXLR8
Introduced in Alien Force Alien XBig ChillBrainstormChromastoneEcho EchoGoopHumungousaurJetrayLodestarNanomechRathSpidermonkeySwampfire
Introduced in Ultimate Alien AmpfibianArmodrilloChamalienClockworkEatleFasttrackJuryriggNRGShocksquatchTerraspinWater Hazard
Introduced in Omniverse AstrodactylAtomixBall WeevilBloxxBullfragCrashhopperFeedbackGravattackGutrotKickin HawkMole-StachePesky DustThe WorstToepickWalkatroutWhampire
Future Aliens SandboxShellheadSnakepit
Ultimate Aliens AlbedoArctiguanaBenBig ChillCannonboltEcho EchoGravattackHumungousaurRathSpidermonkeySwampfireWay BigWildmutt
Fusion Aliens Atomic-XBig ChuckCrashockerDiamond MatterFourmungousaurHeat JawsHumungoopsaurStink ArmsUprigg
Concept Fusion Aliens GravadactylXLRG
Competition Winners Alien Maker Contest WinnerMoyoInvinciblePortalerShadowmanStretcheleo
MAD ChromastoneFour ArmsHumungousaurJetrayNRGSwampfire
Total Access AntigraviteslaBob the BlobPlantapocalypse
Ben 10: Science Hero CaetSektoid TransformationShafarnianSteeler
Tim 10 BloxxFour ArmsHeatblastSkateasaurusUpchuckXLR8
Other Cartoon Network AlienEon (retconned)Evil Way Big (Cosmic Destruction)Fuel Run AlienGrendene AlienK-Zone AlienRobot AlienRocksSquidstrictor