NEOS are the same as Sigma virus like in the Megaman X series but Neos are more of a Parasite than a Virus, as they took control both organic or inorganic materials as a host. Like all parasites they take the lifeforce out of them and once it does the host is virtually dead and the Neos permamently fused with the body. These are Type 1 NEOS, the most basic opponents in the story and a suitable foes for beginners but each of these NEOS have different types of abilities:

Switch: A Mechanical type NEOS that basically infected a machine and use it as it's own body. But when it infects a computer it transforms into a computer virus.

Freako: A Ghost type NEOS which uses a human being as a host and once it took full control of the body, the human is virtually dead.

Pyro: A Fire type NEOS that is technically not a parasite therefore cannot infect anything but it can create and manipulate fires in it's own will

Frostbite: An Ice type NEOS which is basically has the same manipulative ability as Pyro but this one can create ice or manipulate water and turn it into ice.

Sparky: An Electrical type NEOS but this one can control Electricity especially lightning from strong weather.

Arc-Bender: A Mage type NEOS and this one has the power of the basic elements like Fire, Water and Lightning but only in Level 1 state.

Geo-Mancer: A Combination of all the the Type 1 Neos which has a high level of defense and can be very difficult to penetrate it's armor.