Laser Arrow

Odd's Lazer Arrow.

Lazer Arrows are Odd's primary weapon in Lyoko. He carries arrow launchers on each arm, in the shape of paw-shaped gloves that cover the entire arm.
The lazer arrows resemble silver or golden arrowheads (depending on the episode). Each does 10 damage to a monster, unless they hit the Eye of XANA, in which case the monster automatically dies. In the first season, he carries ten on each arm, and could run out of them on a bad day. In the second season, Jeremie gives Odd an upgrade that allows him to carry 10,000 arrows on each arm.

Arrow Reloading Program.

Whenever he's firing an arrow, he usually shouts Lazer Arrow!, but in a few episodes he has said other things (for example, Lazer flash!), and sometimes says nothing at all. The arrows can, if necessary, be fired rapidly, as shown by the Polymorphic Clone of Odd in Revelation.
In Amnesia, Odd manages to fire an arrow in a twisting, convoluted path. This ability is not commented on, nor seen again.
It is shown in Marabounta that Lazer Arrows can be modified, like how Jeremie implanted a single arrow into Odd's arm that could be used to infect the Marabounta, destroying it once and for all.

Odd preparing to fire an arrow at a Kankrelat.

In Franz Hopper, XANA, disguised as Franz Hopper, gives Odd an upgrade for his Lazer Arrows. They could now home into their targets, assuring a hit. When XANA was revealed to be the fake Hopper, Odd lost this ability.