Tetrax Shard

Tetrax is a battle-hardened bounty hunter with a strong desire to do what is right. This is partly due to his involvement in the destruction of his home planet, Petropia.

Tetrax claims that he used to be a being who cared about no one but himself and that is what led him to become a mercenary. It was only after Vilgax destroyed Petropia that he realized the effect his actions had on his own people. That experience made Tetrax into the heroic Omnitrix guardian he became.

Upon first discovering that Ben Tennyson has the Omnitrix, he laments the fact that out of the planet's six billion inhabitants, the Omnitrix ended up on the wrist of a child. He also berates Ben's lack of strategy in regards to its use. After helping Ben to defeat the other hunters, during which Ben learns to use the Omnitrix strategically, he decides that the Omnitrix is in good hands, allowing it to remain with Ben.

Tetrax helps Ben become a better hero, teaching him to use the Omnitrix wisely. Ben later repays him by reviving the people of Petropia.

Tetrax deeply despises Vilgax due to their history.

As a being who cared about no one but himself, Tetrax became a mercenary and ended up hiring himself to Vilgax. When he finished the job Vilgax gave him, Vilgax created a weapon (using the crystal Tetrax stole) and used it to destroy Tetrax's home planet, Petropia, when his people would not bow down to him.

This caused Tetrax to betray his former employer and join a team dedicated to stopping Vilgax at all costs. He also dedicated his life to learning everything about the Omnitrix.

Tetrax first appeared in the Ben 10 episode "Hunted" under the alias of "Hoverboard" where he competed against Kraab and SixSix to obtain the Omnitrix from Ben. He later assists Ben against the other two bounty hunters and saves Gwen and Max.

Tetrax returns in Ben 10: Secret of the Omnitrix. Tetrax arrives on Earth after receiving the Omnitrix's SDM (Self Destruct Mode) signal, and takes Ben aboard his ship in search of Azmuth, the creator of the Omnitrix and the only one who can deactivate the self-destruct function. Unfortunately, Tetrax's problems are multiplied when Gwen stows away aboard his ship, and Ben's transformations are revealed to accelerate the countdown. On Incarcecon, Tetrax runs into SixSix, another of the bounty hunters hired by Vilgax who ended up on Incarcecon. After a brief battle, he and the Tennysons find Myaxx, Azmuth's former assistant. Because of her, Tetrax is forced to reveal that the Omnitrix's explosion will create an energy ripple that will destroy the whole universe. Tetrax then leads the group to Azmuth's compound on Xenon, where he faces SixSix again before defeating him by delivering a punch to the face.

Tetrax appears again in Ben 10: Destroy All Aliens, where he arrives to Earth to find Ben after picking up a signal from the Omnitrix. He locks Ben from reverting back to normal for his own good and is sucked into the Omnitrix with Gwen, where they are attacked by a swarm of Vulpimancers. Tetrax manage to escape from the Omnitrix through Gwen casting a spell that teleports them away, but Tetrax and Max are forced to fight Ben's mom & dad when they are transformed by the Omnitrix into a Pyronite and a Vulpimancer respectively. Fortunately, the Mechamorph Armor merges with the Omnitrix and Gwen casts a spell that transforms Ben's parents back. Tetrax, Azmuth, and the latter's father hide elsewhere to avoid being sighted by Carl and Sandra. Later on, Tetrax leaves Earth.

Tetrax returns in the Ben 10: Alien Force episode "The Secret of Chromastone", when he comes to Earth, demanding that Ben hand over Chromastone. He transforms Ben into Diamondhead, thinking he'd transform into Chromastone. He then uses a sonic device to shatter Diamondhead, seemingly releasing Chromastone from the Omnitrix and leaving Diamondhead alive in pieces (literally). Tetrax gives Chromastone a crystal which he absorbs, then flies off into space. Kevin restores Ben to normal, who then demands an explanation from Tetrax.

Tetrax reveals that Chromastone is the only one who can restore Petropia and his people back to life. He explains that the crystal he stole and gave to Vilgax (who used it to power the weapon that destroyed Petropia) was in fact a crystallized back-up for both his planet and its people. Upon discovering this, Tetrax stole the crystal back from Vilgax and gave it to the freed Chromastone so it could use the crystal to restore Petropia. This was Tetrax's way of atonement for his part in Petropia's destruction.

However, his theft of the crystal didn't go unnoticed by Vilgax, who followed Tetrax to Earth, demanding he hand over the crystal. Tetrax, Ben, Kevin, and Gwen are then chased by Vilgax, who he believes are in possession of the crystal. Vilgax eventually manages to catch Tetrax, demanding he hand over the crystal, but Kevin accidentally reveals the crystal's location. Vilgax flies off to Chromastone's location to discover the newly restored Petropia (Ben and company race to stop him aboard Tetrax's ship).

Angered that someone would use "his crystal" to restore a dead world, Vilgax beats Chromastone, who pleads for mercy, only to find Vilgax has none to give. Tetrax, Ben, Kevin, and Gwen arrive to see Vilgax beating Chromastone. Tetrax attacks Vilgax, but Vilgax's shield protects him from the crystal projectiles.

To Tetrax's horror, Vilgax removes the crystal from Chromastone before he can revive the Petrosapien people. However, Vilgax discovers the crystal power is gone, leaving it no longer useful to him. Vilgax flies off in disappointment, leaving behind the dying Sugilite. All hope seems lost, but the dying Sugilite generates a new backup crystal and hands it to Ben before fading away. Unsure of how to use the crystal, Ben transforms into Diamondhead, who instinctively knows how to use it and restores the Petrosapiens back to life.

Tetrax and a revived Chromastone (who is revealed to be Sugilite) thanks Ben for his help. Tetrax decides to give Ben and company a lift back. Before leaving, Ben thanks him for the ride back home. Tetrax told Ben that it was the least he could do. Gwen says that she, Kevin and Ben don't want to hold him back as he must be anxious to get back to his friends. Tetrax replies that he is, but first, he's got a score to settle with Vilgax. Ben wonders if it's really such a good idea, as Vilgax is pretty much invincible. Tetrax just replies with a simple "Maybe....Maybe not..."

Being a Petrosapien, Tetrax has all the same powers as his species, most notably his ability to fire crystal shards from his hands and his immense durability against most energy weapons. He onced used his durability and strength in combination to punch right through the heart of one of Vilgax's attack droids. In addition to his natural powers, Tetrax is an experienced bounty hunter with excellent fighting and strategy skills. He once easily blocked and countered every attack Diamondhead could throw at him using only one hand, whilst simultaneously criticising his brutish fighting style. He is also very fit for a Petrosapien, as he constantly trains in between his missions, and has very sharp reflexes. Tetrax is also shown to be highly knowledgeable in regards to various advanced technologies. He is particularly devoted to understanding how the Omnitrix works, and was even able to reprogram it.

Expert Hand-to-Hand Combatant Gun Proficiency Technological Expertise Omnitrix Expertise Crystallokinesis Crystal Levitation Body Alteration Weapon Manifestation Regeneration Arm Extension Arm Enlargement Crystal Shard Projectiles Explosive Crystal Shards Crystal Shard Growth Crystalline Constructs Crystal Transportation Crystallization Energy Refraction Energy Absorption Energy Redirection Enhanced Strength Enhanced Durability Enhanced Jumping Enhanced Acrobatics Enhanced Speed (via riding constructs) Enhanced Reflexes Space Survivability Time Ray Immunity Acid Immunity Xenocite Possession Immunity Fire/Heat Resistance Technological Expertise Gun Proficiency Crystal Spit (only one time when he got sick)