Matoran Alphabet

The Matoran Alphabet was the system of written language used mainly by Matoran and several other inhabitants of the Bionicle. It is similar in most respects to our own, using a system of circles, dots, and lines to convey the characters in our alphabet, the Latin alphabet.

On Voya Nui and possibly Mahri Nui (given they were once connected) hexagons were used in place of circles. However, it is unknown if this is merely a cosmetic change, or practical.

Here is the guide:

Trivia
There are also Matoran letters for Å, Ä and Ö.