>>55928303Its literally in Terapagos description. Energy is literally anything, from movement to electricity to the sunlight, Terapagos converts that and stores it into crystals. Crystals irl are capable of doing just that, store energy.
The process method it uses is through his shell which radiates the light of all types in it. its a poisonous, radioactive procedure. We see it happen in real time during DLC2 when Professor Heath says she threw in the Stellar shards she found from Terapagos into the liquid substance floating above the terrarium and from there, Stellar phenomenon started spreading on Pokemon. We know the method is both poisonous and radioactive from this, further backed up by Glimmet and Glimora.
>"It absorbs nutrients from cave walls. The petals it wears are made of crystallized poison."This pokemon is only naturally found in Area Zero and areas filled to the brim with Tera crystals.
>"Glimmora's petals are made of crystallized poison energy. It has recently become evident that these petals resemble Tera Jewels."Its also through these tera shards that you can change pokemon typings at will. You dont have them hold them, you have them consume it.
Going back to Energy this is a trait shared by the Paradox Pokemon, Future Pokemon are dependant on the energy from electricity, while Past Pokemon are dependant on the energy of the sun. They can bypass this check simply by using Energy Boosters, and these work for both species despite being neither electricity and sunlight, its liquid. This Liquid is similar to the rooftop terrarium liquid, so my assumption here is that this is liquid tera energy.
Why are the Paradox Pokemon created at the basis of energy to begin with? Because Terapagos has nothing else to go for these lifeforms, as he himself is a lifeform dependant on energy. We know from Glimmora that it is possible for pokemon to be born from terastalize. We dont know for sure how it works, beyond that Sara/Turo use a fictional book as the basis.