Manta

Vaguely resembling manta rays, Mantas take up residence in Sector 5. They are capable of flight, but look as if they're swimming when doing so, and shriek like hawks. Like the Krabes, their Eye is located on their backs, and is rather large when compared to other monsters. Despite this, they have the most endurance compared to other monsters; a Manta once survived an assault by Ulrich that nearly bisected it. Mantas seem to be Xana's last line of defense against intruders, since they only materialize when Aelita has reached the interface in Sector 5. William also has a black-colored Manta (as opposed to the standard blue) which he uses as transportation.

Mantas have two weapons at their disposal. The first is a powerful laser that can be chained, but at medium-paced speed. The damage caused by this laser is 60 life points. Like with the Krabe, the Eye accompanies the firing of the Manta's laser. They also have the ability to lay floating mines, which resemble floating skulls with the Eye printed on their faces. The mines can either float in place to act as barriers or track their target until they destroy it. The mines detonate upon impacting a solid object, regardless of what that object may be. The Mantas can lay hundreds of mines in rapid succession, allowing them to quickly blockade a target or a specific area, though they will disappear just as quickly after a few are destroyed. The mines cause instant devirtalization should they hit, though the vehicles are capable of surviving a single blast.

Apart from their regular weapons, two Mantas exhibited a unique attack when working together in "Temporary Insanity". By joining at their stomachs, the two Mantas were surrounded by a red aura that enabled them to fire a massive red laser. When the laser struck both Odd and Ulrich, who were riding on Odd's Overboard at the time, they were enveloped in the same aura which eventually devirtualized them. After a short period in the real world, they went insane, believing themselves to be on Lyoko. After returning to Lyoko, they believed themselves to be on Earth.

Being from Sector 5, the Mantas also have a unique trait. Unlike other monsters, Mantas aren't materialized when needed. Instead, they form from lumps on the outside "wall" of the sector in a process referred to as "hatching."

Mantas travel in groups of one to three. They tend to use the same hit and run strategy as the Hornets, but their slower speed allows them to fire more in a single pass. It also makes their passes in general take longer, giving their targets a greater opportunity to counterattack. They can also use their flying mines to chase down or barricade their targets, preventing any means of escape. When facing a stationary target, they use the same circling strategy as the Hornets.