XLR8 resembles a slender semi-armored velociraptor, the base creature for the form's design. XLR8 has wheel-shaped feet and wears a helmet with a windshield, which is part of his alien biology, leaving the features of his head unknown. XLR8 has the ability to manipulate friction to reach speeds of 300 mph in an instant, and the same power allows him to climb up walls and run on water with relative ease. Using his speed, XLR8 can perform a number of unique feats. He can create tornadoes through centrifugal force, either through running in a small circle or spinning, and can deliver speed-enhanced attacks in rapid succession. Amazing reflexes accompany this speed, allowing XLR8 to quickly dodge attacks with relative ease. His scissor-like claws can also cut through objects. XLR8's weakness is his lack of physical strength, which is about on par with a normal human, although his speed tends to make up for it. Magnets and charged pulses are said to be a problem, apparently disorienting Kineccelerans to the point that they cannot balance properly. Kineccelerans are said to be incapable of running on slippery surfaces, furthermore, because of their constant motion, Kineccelerans build up large stores of static electricity, which reacts badly with water. XLR8 never had such problems like these however. Ben first transformed into XLR8 in "And Then There Were 10" when he decided to play around a bit with his newfound power, using the form to get revenge on Cash and JT which he fought with earlier in the episode.
In the future, XLR8 has a more pointed head, his eyes seem to be larger, and now has more white stripes on his shoulder and on his tail; he also has a scanner built into the helmet, the product of nanotechnology Ben 10,000 uses to enhance his aliens.
XLR8 appears as a playable alien form in "Ben 10: Protector of Earth".