|Affiliations|| Providence (formerly)|
Providence Defect Group
Ben's Team (Ally)
|Powers and Abilities|
Curing other E.V.Os
Creation and manifestation of machines in his body
|Equipment|| Nanite Machines (create with his powers)|
Omega 1 Nanite
|Relatives||Caesar Salazar (brother)|
|Alias|| Robot Boy (Rath and Kevin)|
Machine Boy (Ben)
|Voice Actor||Daryl Sabara|
|First Appearance||Ben 10-Generator Rex: Heroes United|
Rex Salazar is a young E.V.O (short for Exponentially Variegated Organism; a person infected with active nanites) with the ability to cure other E.V.O.s, including the ability to control his nanites using the Omega 1 Nanite. He can grow machines from his body, often using his limbs, and can communicate with technology, machines and even with nanites themselves.
Rex is Hispanic, being half-Mexican and half-Argentinian. He is most normally seen with lightly spiked, slicked back dark hair. He is also taller than most people his age. Rex also wears a pair of orange goggles on top of his head, with a matching red-orange patterned jacket. His T-shirt is blue on the top-half and white on the bottom-half, with two orange rectangles on the left pectoral. Rex wears black pants with blue geometrical patterns which glow whitish blue whenever Rex uses his powers. He also wears blue gloves with orange cuffs and blue-black shoes.
It's mentioned by Rex in a Flashback in the past, 6 year ago the Nanite Event changed his World, and transform him into a E.V.O with creating Machines and curing powers.
Ben 10-Generator Rex: Heroes United
He made an appearance in the crossover special when Ben Tennyson steps into a portal into his world and Rex confuses Ben for a dangerous E.V.O. After Rex and Ben have a fight they eventually team up to face the worst either have ever faced, the sapient nanite Alpha a creature that has to suck the nanites from E.V.O.s in order to survive, turning them to dust in the process.
The duo eventually confronted Alpha inside the The Bug Jar where it absorbs Rex's Omega 1 Nanite in an effort to create a body to sustain himself. Ben was eventually able to use Upgrade to increase Rex's power and together were able to do enough damage to Alpha that Rex was able to trap him in a super-concentrated ball of Nanites that Ben was able to dump into the Null Void on his way back to his universe.
Hero Times Two
Rex arrived to Ben's Universe with Bobo to hunt The Pack, and to obtain the Promethium. Encounter with Ben and the team and need help. He has a rivalry with Kevin, but later failed to defeat the Pack and send back to his universe with help of a portal created by Gwen.
Powers and Abilities
Like all living things on his Earth dimension, Rex has billions of nanites inside his body. After activation, their nanites mutate a normal being into an EVO. However, unlike most EVOs, Rex has the ability to control his nanites at will, allowing him to build various machines on his body. He can also use his nanites to communicate with a variety of machines and cure some EVOs of their mutations.
|The B.F.S (Big Fat Sword)||Is a big sharp sword, Rex can build this on either arm with a secondary mode in which it's used as a buzzsaw. It is very durable.|
|Smack Hands||Are two giant gauntlets that Rex builds on both of his arms. The have a secondary function in which Rex spins them like drills to either add extra power to his punches or tunnel through solid rock.|
|Slam Cannon||Is a large handed cannon that Rex builds on either arm. It grabs ammo from the ground and shoots it out.|
|Punk Busters||The Punk Busters are super boots that Rex builds out of his feet. He can jump very high in them. He can even use them to kick foes really hard.|
|Boogie Pack||The Boogie Pack is a jet pack with a pair of large turbine wings. The two gray turbines can be shot out like bolas and reeled back in.|
|Rex Ride||A motorcycle that uses levitation instead of wheels with a built-in battering ram. Rex can ride very fast on it.|
|Blast Caster||Is a mechanical tentacle, with a nanite generator in his back, the tentacle is extendable to a great length and can be used to electrocute his opponents.|
|Funchucks||The Funchucks are giant nunchucks that are attached to both of Rex's arms. He can spin them at high speeds launch them at his enemies or use them to generate an energy pulse.|
|Bad Axes||The Bad Axes are a pair of large blue axes that can slice through almost anything. The sharp edges are a light, glowing blue.|
|Block Party||The Block Party are a pair of shields built around Rex's lower arms and hands. They are made up of super-charged atoms that can block almost anything.|
|Upgrade Suit||The Upgrade Suit is the form that Rex takes by merging with Ben Tennyson in his Upgrade form. It is powered by alien technology. With the upgrade suit Rex's builds are enhanced to levels far beyond anything on Earth; providing very advanced weaponry that includes faster flight, speed and greater strength—all with the help of Ben Tennyson.|