Hi, I’ve noticed a few things about Matoran-to-Toa transformations that I think point to certain conclusions, but I don’t believe they’ve been explicitly confirmed/denied:
In his 2003 set form, Takanuva has the exact same build as Gali Nuva (just different colours and mask of course).
Takua knew all of the Toa Mata/Nuva, but he formed that special mental link with Gali that you touched upon again in 2008, so I think it’s fair to say she probably stood out for him in some way.
It has been previously established that when Matoran turn into Toa, their armour configuration takes the form of what they think a Toa looks like.
The Toa Metru had the same build and exactly the same armour as Toa Lhikan. So:
1. Did Takanuva’s armour resemble that of a Toa Nuva because he saw Toa Nuva as a “truer” form of the Toa Mata (not understanding that Toa Nuva are really a different class of Toa)?
2. Did Takanuva’s armour resemble Gali’s specifically because he respected her the most/saw her as the “truest” model of what a Toa should be, or was it just a coincidence?
3. Similarly, did the Toa Metru’s armour resemble Toa Lhikan’s because they saw Lhikan as the “truest” model of what a Toa should be, even though they would have surely seen the other Toa Mangai during their times as Matoran?
4. Did the Toa Inika/Mahri have forms apparently not based on previous Toa due to the unusual circumstances of their transformations (lightning from the Red Star/the Ignika transforming them to suit operating in Mahri Nui)?