Zeltrax

""Did you really think you could get away so easily? I will have my revenge Tommy.""

- Zeltrax before being struck by Tommy and Kira's personal weapons and his final words before his destruction.

Zeltrax, previously known as Terrance "Smitty" Smith, was one of Mesogog's henchmen. He is the tertiary antagonist of Power Rangers Dino Thunder. Terrence Smith was once a good man and good friend to Tommy Oliver and Anton Mercer. But during the incident he was heavily injured and Mesogog turned him into the ruthless cyborg, who obeyed him.

Early Life
Terrance "Smitty" Smith was once a partner of Tommy Oliver and Anton Mercer. At some point, Tommy and Smitty were up for the same job, and Mercer chose Tommy over Smitty. Smitty went to work for a different company, where, during an explosion at his lab, he was grievously injured. Mesogog found his ruined body and rebuilt him with cybernetic technology into a black armored cyborg.

As Zeltrax
As Zeltrax, he is bent only on gaining revenge on Tommy and holds him responsible for the recent tragic events in his life, including his near fatal accident. During his attempts at revenge, he inadvertently created a clone "son" named Goldenrod. Goldenrod proved a powerful adversary to the Rangers, but was destroyed by Tommy, increasing Zeltrax's hatred of the Black Ranger. After a second near fatal experience, because of his master's plans, Zeltrax mutinied against Mesogog and went out on his own. Zeltrax later gained a super powered form through the special underground spring that flowed beneath the Tree of Life. In the final episode of Dino Thunder, Zeltrax kidnaps Elsa (who was reverted to a normal human being after her powers were sacrificed by Mesogog to power his trans-mutation cannon) and invades the Rangers' base. Then, with the aid of the Triptoids, Zeltrax built his giant Zelzord, where Elsa is held hostage. Zeltrax uses his Zelzord to demolish Reefside, but Tommy battles Zeltrax along with Kira who rescues Elsa just in time before the Zelzord is finally obliterated by the self-destruction of the Rangers' Dinozords. Elsa is saved, and Zeltrax was eventually destroyed by Tommy and Kira.

SPD Encounter
Zeltrax also appeared in the Dino Thunder/SPD team up episode, Wormhole, which is set before the Dino Rangers' final battles. During the episode, Zeltrax reluctantly joined forces with Emperor Gruumm who had traveled back in time through a temporal wormhole. Together they fought the Dino Rangers and the S.P.D. Rangers. Despite Gruumm's aid, Zeltrax was defeated by a double-team from Tommy and Anubis Cruger, the SPD Shadow Ranger. Zeltrax then retreated and left the Tyrannodrones he had to their doom.

Powers;
Abillities.
 * Super Strength-As one of the main antagonists of Dino Thunder, Zeltrax is far stronger than any monster of even Elsa. He is surpassed only by Messogog himself. When he tied Ethan up with his tractor beam, he was strong enough to slam him hard against a wall with a swipe of his hand. When fighting Tommy over the Raptor Eggs, he kicked Tommy in the hand hard enough to send him spinning back a bit. A single shove was enough to knock Tommy back at least a dozen feet.
 * Durability-As one of the main villains, Zeltrax can take a lot of powerful hits and be unfazed. He was able to be blasted by the Z-Rex Blaster, as well as explode from the attack, and be unfazed. When the Thundersaurs Megazord destroyed his Aerial Assault Craft, his cockpit exploded many times in his face yet he was unfazed.
 * Tractor Beam-Zeltrax can flash his "eyes" and fire a purple tractor beam from his left hand. This was powerful enough to let him lift up Ethan and slam him against a wall several times.
 * Injury-When he first wrapped Ethan up in the beam, it caused him visible pain.
 * Helmet Blasts-Zeltrax can fire purple energy blasts from either side of his "head/helmet." These were powerful enough to take Connor, Ethan, and Kira down in one hit.
 * Teleportation-Zeltrax can summon a green portal above him and go into it to transport to any location at will.
 * Master Swordsman-Zeltrax is an absolute master of the sword. He can easily overpower the core Dino Rangers but is no match for Tommy or Trent.

Arsenal.

 * Sword-Zeltrax has a large sword to aid him in combat
 * Shield-Zeltrax carries an industructable shield to defend him whilst he is fighting his enemies. A full force kick from Tommy did nothing, despite it knocking back Zeltrax. Being smacked by Elsa's sword did no damage or even dent it.
 * Axe-On occasion, Zeltrax has used an aze to fight instead of his sword. It is unknown why he switched weapons.