u/Crimson-allspeaker

You can decide where you want to eat it from

A hunk

Vox

Or thragg

From the program we get to know how it works the avatar is half the dna of a Na’vi and the dna of the human who will inhabit the new form , five fingers from the human with the skin of the Navi and eyebrows of the man , what keeps it separate is when the Avatar is in full motion it can only breath pandora air forgoing the need of a mask but just like the Natives can’t survive in regular human oxygen as seen with Miles quaritch when he was cloned as a avatar body making him unable to exist as before. Spider however is a more refined version, cutting out the height of the ometakya , he has grown A Kuru smaller but able to link to the animals and others but can breath in the used to be toxic air but still retains well adapted lungs for both environments. We could even see more traits involving the extended lifespan given the people like Neytiri can live for 200 years for her species, perhaps even greater strength without needing taller stature for Spider, it’s all a idea but I feel like I am accurate

From many plot points there is a common thread of telepathic experiences from the largest of these creatures , with Shimo it is a calling from her spikes which if weaponized can control her with pain and even link her with another host as given Skars eyes , we then can see who over commands most respect and power or at least favorable leaders to be in charge. Mothra can speak to humans with mere thoughts than actual sound such as the case of its Titan X and Sonar frequencies, Rodan hasn’t shown many signs of this so he is a Titan but not one to lead without better power behind him