Without further ado:

Elemental Tribes of C.I.R.C.L.E. Matoran

Ar-Matoran typically wear armoring that is a combination of Black, White, or Silver and tend to have Laidback, Soft, & Truthful personalities.

 

Av-Matoran frequently wear a variety of shades but typically prefer armoring that is a combination of Golds or White and tend to have Quirky, yet Highly Variable personalities.

 

Ba-Matoran typically wear armoring that is a combination of Black, Grays, Greens, or Silver and tend to have either Serious & Oppressive or Light & Fleeting personalities.

 

Ce-Matoran typically wear armoring that is a combination of Blues or Golds and tend to have Wise, Thoughtful, & Highly Dedicated personalities.

 

Cu-Matoran are extremely rare and typically wear very heavy armoring that is a combination of Black, Grays, Silver, or White and tend to have Dark & Brooding personalities.

 

De-Matoran typically wear armoring that is a combination of Black, Blues, Grays, Silver, or White and tend to have Quiet, Sensitive, & Reserved personalities. Also, the power of "Silence" is a subdivision of this Element.

 

Fe-Matoran typically wear armoring that is a combination of Black, Grays, or Silver and tend to have Quiet & Ingenious personalities.

 

Ga-Matoran typically wear armoring that is a combination of Blues, Grays, or Silver and tend to have Educational, Pious, Swift, & Pure personalities.

 

Ha-Matoran typically wear armoring that is a combination of Black, Grays, or Silver, alternately some prefer to wear Blues or Reds, yet all tend to have Overly Friendly personalities.

 

He-Matoran typically wear armoring that is a combination of Browns or Oranges and tend to have rather Volatile personalities.

 

Hi-Matoran typically wear armoring that is a combination of Bright Light Orange, Dark Blue, or White and tend to have Tactical, Strategic, & Adventurous personalities.

 

Ho-Matoran typically wear armoring that is a combination of Black, Grays, Silver, or Trans-Blue, though some prefer Black, Dark Red, Flat Dark Gold, or Yellow, yet all tend to have Thoughtful & Secretive personalities.

 

Hu-Matoran typically wear armoring that is a combination of Black, Flat Dark Gold, or Yellow and tend to have Highly Variable personalities subject to Broad-Ranging Mood Swings.

 

Ina-Matoran typically wear armoring that is a combination of Bright Light Orange, Light Grays, or Lime and who tend to have Skilled & Strategic yet somewhat Clumsy personalities. Occasionally this Element is referred to as "Rubber".

 

Ka-Matoran are quite rare and typically wear armoring that is a combination of Pale Blues, Light Grays, or White and tend to have Quiet, Insightful, & Perceptive personalities.

 

Ki-Matoran typically wear armoring that is a combination of Dark Blue or White and tend to have Nurturing & Flashy personalities.

 

Ko-Matoran typically wear armoring that is a combination of Black, Blues, Grays, Silver, or White and tend to have Peaceful, Willful, Cold, & Uninviting personalities that are Fixated on the Future.

 

Kur-Matoran typically wear armoring that is a combination of Black or Dark Red and tend to have Rowdy, Rough, & Tumble personalities.

 

Le-Matoran typically wear armoring that is a combination of Greens, Grays, or Yellow and tend to have Faithful, Carefree, & Adventurous personalities. Also, the power of "Vacuum" is a subdivision of this Element.

 

Ma-Matoran typically wear armoring that is a combination of Black or Dark Red coloring and tend to have Confident & Aggressive personalities.

 

Mi-Matoran are quite rare and typically wear armoring that is a combination of Black, Grays, or Silver and tend to have Imaginative, Creative, & Technical personalities.

 

Ne-Matoran typically wear armoring that is a combination of Grays, Oranges, or Yellow and tend to have Eccentric, somewhat Jittery, Hyperactive, & Playful personalities. Occasionally this Element is referred to as "Kinetics".

 

Onu-Matoran typically wear armoring that is a combination of Black, Grays, Oranges, Purple, Silver, or Trans-Dark Green and tend to have Hardworking, Enduring, & Prosperous personalities that are Fixated on the Past.

 

Ota-Matoran typically wear armoring that is a combination of Black, Blues, Browns, or Greens and tend to have Nurturing personalities. Occasionally this Element is referred to as "The Green" or "Plant Life".

 

Pe-Matoran typically wear armoring that is a combination of Oranges or White and tend to have Pugnacious & Blindly Loyal personalities. Occasionally this Element is referred to as "The Swarm".

 

Po-Matoran typically wear armoring that is a combination of Black, Browns, or Oranges and tend to have Creative, Competitive, & Strategic personalities.

 

Ra-Matoran typically wear armoring that is a combination of Black, Oranges, or Reds and tend to have Patient & Measured personalities.

 

Ri-Matoran typically wear armoring that is a combination of Oranges, White, or Yellow and tend to have Abrasive, Noxious, Spiteful, & Unpleasant personalities.

 

Ta-Matoran typically wear armoring that is a combination of Black, Oranges, Reds, or Yellow and tend to have Dutiful, Tactical, & Precise personalities.

 

Tai-Matoran typically wear armoring that is a combination of Browns, Grays, Oranges, or White and tend to have Levelheaded, Straightforward, & Blunt personalities.

 

Ti-Matoran typically wear armoring that is a combination of Grays or Greens and tend to have Quiet & Hardworking personalities.

 

Tur-Matoran are quite rare and typically wear armoring that is a combination of Blues, Grays, or Silver and tend to have Laidback, Soft, & sometimes Uncaring personalities.

 

Uk-Matoran typically wear armoring that is a combination of Black, Dark Green, or Silver and tend to be Loners with Over Protective personalities.

 

Ul-Matoran are extremely rare and typically wear very heavy armoring that is a combination of Black, Blues, Grays, or Silver and tend to have Dark & Brooding personalities. Occasionally this Element is referred to as "Decay" and the powers of "Acid" and "Molecular Disruption" are subdivisions of this Element.

 

Um-Matoran typically wear armoring that is a combination of Blues, Grays, Purples, or Silver and tend to have Hardworking yet Playfully Carefree personalities.

 

Uri-Matoran are quite rare and typically wear armoring that is a combination of Blacks, Grays, or Golds and tend to have Honorable, Willful, & Warlike personalities. Also, "Shadow" is not the same as this Element.

 

Vo-Matoran are extremely rare and typically wear very heavy armoring that is a combination of Black, Grays, or Silver and tend to have Dark & Brooding personalities.

 

Wha-Matoran typically wear armoring that is a combination of Black, Grays, or Purple and tend to have Extremely Pacifistic & Gentle personalities.

 

Xi-Matoran are extremely rare and typically wear very heavy armoring that is a combination of Black, Browns, Grays, or Silver and tend to have Dark & Brooding personalities. Occasionally this Element is referred to as "Fragmentation".

 

Ye-Matoran are extremely rare and typically wear very heavy armoring that is a combination of Black, Greens, Grays, Reds, or Silver and tend to have Dark & Brooding personalities.

 

Za-Matoran are extremely rare and typically wear very heavy armoring that is a combination of Black, Grays, Reds, or Silver and tend to have Dark & Brooding personalities.

That's all for now, however it's possible that there might be future additions.

It should be noted that for the most part I developed the prefixes from the Māori Language, just as the original Canon prefixes were decided upon.

Anyway, feel free to ask questions in this thread as we continue to seek to improve this aspect of our group.