Opticoid

Opticoid (a play on "optical") is a species from the planet Sightra (a play on sight).

Appearances
Opticoids are tan-colored reptilian creatures with at least 17 eyes scattered across their muscular upper body. Their face consists of only a mouth and two pink, bat-like ears that dominate most of their head.

Abilities
An Opticoid's most prominent ability is firing energy beams from any of the eyes on their torsos. These beams come in different colors including green, blue, and red.

An Opticoid's eyes can move throughout their bodies and merge with each other to create different types of beams, including freeze rays, fire beams, electric beams, and sticky goop streams.

By closing all of their other eyes, or by merging all of their eyes into a single area, a larger eye will open on an Opticoid's chest and launch a powerful optic blast. While doing so, they can stretch their eye out of their chest and move it towards targets.

An Opticoid's insect-like vision gives them 360-degree vision, making it extremely difficult to sneak up on them. Their bat-like ears can detect would-be attackers.

Opticoids possess enhanced strength to throw enemies with ease.

Weaknesses
If an irritant gets in their eyes, Opticoids will be unable to see clearly, in addition to their eyes burning. As they have eyes over the majority of their bodies, they become vulnerable to being exposed and hurt by irritants.

Despite their enhanced hearing, Opticoids are sensitive to high-pitched noises, such as those of an Evolved Sonorosian's Sonic Disks.

An Opticoid's insect-like vision becomes a weakness whenever they see something or someone that they are afraid of.

Omnitrix Transformation
The Omnitrix's Opticoid representative is named Eye Guy, who first appeared in the original series episode "Ben 10 vs. the Negative 10: Part 2". It is implied that he was originally unlocked off-screen prior to "Ben 10 vs. the Negative 10: Part 1". Eye Guy solely appears in the original series and Omniverse.

The Ben Tennyson of Dimension 23 has an equivalent of Eye Guy, who first appeared in the Omniverse episode "And Then There Was Ben".