|Abilities|| Enhanced Strength|
|First Appearance||Video Games|
The Stalker was damaged when Humungousaur used a Sumo Slammers attack, which was not recorded into the Stalker, causing it to go haywire. The defeat was followed by Nanomech, who was able to go inside it and ruin the robot's circuits in which caused it to malfunction. It was crushed by Way Big and he dropped it onto Will Harangue's car, destroying it.
Powers and Abilities
The Stalker possesses immense strength, allowing to easily overpower aliens like Humungousaur and Lodestar, as well as breaking Gwen's mana. It is also durable enough to resist damage from Humungousaur's normal attacks.
The Stalker has 360 degree vision and retractable claws.
The Stalker is equipped with multiple laser blasters, electric antennae and numerous missile launchers. It can shoot strong adhesives to keep Cannonbolt in place.
The Stalker cannot be magnetized, rendering Lodestar's powers useless.
The Stalker has retractable mirrors to deflect Jetray's neuroshock blasts.
Spidermonkey's webs are useless against it.
The Stalker can create enough heat to melt Big Chill's ice.
The Stalker has built-in fire extinguishers to put out Swampfire's fire attacks and can spray a chemical liquid that can kill Swampfire's plants.
While the Stalker's AI was designed to trace and destroy Ben's car, it's not very smart, as it once accidentally attacked a minivan that looked similar to it.
The Stalker can be damaged by attacks that were not recorded into it, causing it to go haywire.
Ben 10: Ultimate Alien
- Video Games (first appearance; destroyed)
- The Stalker does not have counters for Nanomech, Way Big or Sumo Slammers attacks, since none of these were used when recording all of Ben's moves.
- Visually, it is quite similar to the Omnidroid from The Incredibles.
- The Stalker has automatic and manual controls.
- The Stalker is a parody of the Spider-Slayers from Spider-Man. The first Spider-Slayer in the comic books was even commissioned and remote-piloted by J. Jonah Jameson, with his face on the screen to taunt the hero.
- The Stalker is a boss on Ultimatrix Unleashed on level 3.