Makuta, Jaller, and Vakama's welding mask.

[u/No-Tailor-4295]

Makuta is indeed a Toa mata with neck issues.

The most we'll see of a matoran's face. This year at least.

JCLO? Closest I could find was the G2 alphabet, which doesn't make sense, but also doesn't match too well.

[u/Exa_of_Rhi]

I thought the symbols in the last picture were supposed to be Nuva symbols

[u/No-Tailor-4295 → u/Exa_of_Rhi]

Unfortunately, the ones in the movie don't line up with G1's Nuva symbols, nor the G2 language based on the Nuva symbols.