Diamondhead

Diamondhead is the Omnitrix's DNA sample of a Petrosapien from the planet Petropia.

Appearance
Diamondhead is a silicon-based life form. His body is composed of durable green crystals. He sports four green crystal shards on his back and has a sharp head.

In the original series, Diamondhead wears a uniform which is black on the right half and white on the left with a black patch on the left shoulder where the Omnitrix symbol is.

In Alien Force and Ultimate Alien, Diamondhead's torso is similar to Chromastone's, consisting of indigo crystal which has black lines and dots over it. There are now six crystal shards on his back instead of 4 and he now also sports two more on the front of his chest. He wears the Omnitrix/Ultimatrix symbol on his chest.

Gwen as Diamondhead has darker and shinier diamonds, thinner arms, a more rounded body, no shards on her back and a more square head. She wears a uniform like Ben's Diamondhead in original series, except it is half dark blue, half light blue. She wears the Omnitrix symbol on her left chest.

In Ben 10-Generator Rex: Heroes United, Diamondhead looks more real-world crystal-like due to being drawn in Generator Rex-style. He also has a blade on his elbow, similar to that of XLR8's.

In Ben 10: Omniverse, Diamondhead has clothing almost similar to the first series except that now instead of half black and half white, it is all black with one large green stripe down the middle up to his belt, and wears black pants. He has a green with white stripes belt on which he wears the Omnitrix symbol. Also Diamondhead no longer bears the crystals on his chest. The crystals on his back have grown in length also. His jaw is also larger. He also wears black shoes with green on the bottom.

11-year old Diamondhead looks almost identical to the original, but the left side of his suit is missing the black patch around the Omnitrix symbol. His jaw is also larger too. His eyes are green and the Omnitrix is recolored.

Powers and Abilities
Diamondhead's body is composed of extremely thick organic green crystals. He has the ability to manipulate the atomic structure of his physiology at will, allowing him to form his limbs into diamond weapons, however he can control all crystals, regardless of it being part of his biological structure or not. He can fire crystal shards sequentially out of his hands, and as revealed in the Cartoon Network online game, Ben To The Rescue, he can create a powerful attack in which he expels shards in all directions, and as he aged these shards began to explode upon impact. He can make monstrous clusters of crystals, conjuring walls and forming crystal shields and ramps. He can reshape his projectiles into limited shapes, and can also form gaping hands to capture enemies. By Alien Force Diamondhead was skilled enough to levitate crystal prisms, as shown in Vengeance of Vilgax: Part 2. In Trouble Helix, he was capable of encasing enemies in crystals. It has been shown he can create crystals inside of objects and cause them to spike out.

Diamondhead has the ability to regenerate, but to a limited extent.

Diamondhead's body resembles a living prism, allowing weapons similar to lasers to be refracted and rendered useless. In Vendetta, he was able to absorb energy blasts and redirect them, rather than just refracting. Diamondhead is also resistant to fire and heat, as displayed in Framed.

Diamondhead has superhuman strength, easily able to overpower Vilgax in a one-on-one brawl.

Because of Diamondhead being made out of organic crystals, Diamondhead is immune to aging and time rays as crystal doesn't age.

Weaknesses
Diamondhead can shatter if exposed to strong sonic vibrations and might even fall unconscious. While Diamondhead can regenerate limbs, there is a limit to how much damage he can recover from.

The two shards on his back can also leave him stuck on a wall or other surface he's been knocked into.

Alternate Future
In an alternate timeline's future, Diamondhead has regained predominant clothing. As well as a black-layered shirt, the Omnitrix symbol has moved to the center of his chest. His pants are now white and he has black boots. The diamond shards on his back are now bigger and are only the top ones, instead of the bottom ones. He seems more durable than before, but he still gets shattered by strong sonic vibrations, as shown in Ken 10. Since he is more durable than before, he also became a lot stronger than before. He can properly use his powers now and can create more crystal attacks.

Appearances
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 * content====Ben 10===
 * And Then There Were 10 (first appearance)
 * Hunted (x2)
 * Secrets (x3)
 * The Big Tick
 * Framed (by Ben and Kevin)
 * Grudge Match
 * Back With a Vengeance (x4)
 * Ben 10,000 (alternate timeline)
 * Midnight Madness (under hypnosis; unseen)
 * A Change of Face (accidental transformation; selected alien was XLR8)
 * Under Wraps (x2)
 * The Unnaturals
 * The Visitor
 * Perfect Day (Dream)
 * Big Fat Alien Wedding
 * Ken 10 (alternate timeline)
 * Ben 10 vs. the Negative 10 (Part 1)
 * Goodbye and Good Riddance (alternate timeline)

Movies

 * Ben 10: Secret of The Omnitrix
 * Ben 10: Race Against Time
 * Ben 10: Destroy All Aliens

Ben 10 Shorts

 * Handle With Care

Ben 10: Alien Force

 * Vengeance of Vilgax: Part 2 (first re-appearance since Original Series)
 * Single-Handed (selected by Julie)
 * If All Else Fails
 * In Charm's Way (accidental transformation; selected alien was Humungousaur)
 * The Secret of Chromastone (x2)
 * Vendetta
 * The Final Battle: Part 1 (used by Albedo)
 * The Final Battle: Part 2 (used by Bioids)

Ben 10: Ultimate Alien

 * Basic Training (first re-appearance)
 * Ben 10,000 Returns (used by Ben 10,000) (x2)
 * Ultimate Sacrifice
 * Inspector Number 13 (by Gwen)
 * Couples Retreat
 * Night of the Living Nightmare (Albedo's dream; cameo)

Specials

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

11 year old Ben

 * Trouble Helix (first re-appearance)
 * Arrested Development (flashback)
 * Evil's Encore

16 year old Ben

 * It Was Them
 * Gone Fishin'
 * Ben Again (x2)
 * Rad}}

Ben 10: Galactic Racing

 * Diamondhead is a playable alien racer in Galactic Racing (only on DS).

Ben 10: Omniverse

 * Diamondhead is a playable alien character in the game (by both 11-year-old and 16-year-old Ben).

Online Games

 * Ben To The Rescue
 * Battle Ready
 * Krakken Attack
 * Cricket Strike
 * Ben 10 Omniverse: Alien Unlock

Ben 10

 * 4" Diamondhead
 * Diamondhead (Battle Version)
 * Diamondhead (DNA Alien)

Ben 10: Alien Force

 * Alien Creation Figures from (Ben 10) Diamondhead and Grey Matter

Ben 10: Ultimate Alien

 * 4" Diamondhead
 * Alter Aliens Ben to Diamondhead and Ripjaws to Four Arms
 * Comics and 4 Inch Action Figures X-Ray Ben and Diamondhead
 * DVD with Toys Transformation Ben and Diamondhead/w DVD
 * Combo Packs
 * Tetrax, Classic Diamondhead and Diamondhead V.2
 * 4 Classic Diamondhead with Water Hazard, Humungousaur Defender and Big Chill
 * Haywire Figures Diamondhead [Swampfire]
 * Mini 2.5 Inch Collector's Series Ben and Diamondhead

Ben 10: Omniverse

 * 4" Diamondhead
 * Mini Figures Ben (15) and Diamondhead (Ultimate Alien Version)

Trivia

 * Revealed in the I-10 User generated experience, Diamondhead was originally supposed to be an additional alien while Cannonbolt would take his place as an original 10.
 * Before The Secret of Chromastone, and after the destruction of Petropia, Diamondhead and Tetrax were the only known Petrosapiens alive.
 * Diamondhead's transformation in Alien Force is similar to Chromastone's.
 * Diamondhead is the only alien other than Way Big to defeat Vilgax.
 * He makes a crystal metallic sound everytime he moves.
 * Diamondhead is the only alien other than Feedback to defeat Malware.