|Colors||White, grey-blue, light grey, dark grey, light blue, black|
|Habitat||Cold and icy areas|
|Tools and Abilities||Various|
Ko-Matoran armor was primarily cast in white, often with secondary colors of light blue and grey, and they were the only Matoran of the main six elements to have light blue eyes. Darker shades of grey were also not unheard of, and even black was a possible supplementary color, though to date only three individuals have ever been seen to wear it.
Being Ice Matoran, they possessed a natural resistance to the extreme cold of the Knowledge Towers. Ko-Matoran were quiet to the point of being antisocial, and spent a lot of time being lost in thought, pondering the future in accordance with their main virtue of Destiny and the principle of Peace. In Metru Nui, they spent most of their time watching the stars and considering prophesies, with less experienced Ko-Matoran running errands for the more accomplished scholars; little appeared to have changed on Mata Nui.
The Ko-Matoran remained isolated and reluctant to socialize with other Matoran, in particular being annoyed by the past-centered nature of the Onu-Matoran. They were known to be excellent trackers and trappers.
- Certain Ko-Matoran names appear to be derived from Finnish words related to ice, although without umlauts, which would change their pronounciation. Coincidentally, Finland is known for its cold climate.
- Aside from this, Arktinen is derived from the Arctic, the northernmost region of Earth.
| Arktinen • Ehrye • Ihu (Deceased) • Jaa • Jaatikko • Kantai • Kazi • Kokkan • Kopeke • Kualus (Toa)|
Kylma • Lumi • Matoro (Toa) • Mazeka • Nuju (Turaga) • Pakastaa • Talvi • Toudo
|Ta-Matoran • Ga-Matoran • Le-Matoran • Po-Matoran • Onu-Matoran • Ko-Matoran • Av-Matoran • Shadow Matoran|
Vo-Matoran • Fa-Matoran • Su-Matoran • Ba-Matoran • De-Matoran • Fe-Matoran • Bo-Matoran • Ce-Matoran