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Kai's fire would draw from his energy = no wasting it on heating up a hot dog, when he's not fighting or training he would rather eat or sleep or do something not very energy-demanding ...he would also know how to create certain gases because fire doesn't just ignite out of nothing

​Jay's lightning on the contrary wouldn't stay still = he would need to just vent some energy into the aether from time to time or else he will be jittery he also wouldn't need to sleep as much but on the other hand he also had to because he would need to shut down ..if he overdid it he could experience anxiety states not because of psychology but purely due to that tension

​Zane... no robot that's bullshit he also wouldn't control just ice but water as such it's bullshit to separate it... he would have a slow startup... when he does nothing ice takes over and he's all slowed down like that... when he works out too much he literally steams

​Lloyd wouldn't control all of them but rather free energy the only reason why he would be above them in power is that he would already fall into the category on the galactic level

​Cole is earth yes but not just rocks but also pressure minerals tectonic plates magma... he is that inorganic part of the earth, his density might be a bit higher but unnoticeably, but he would feel vibrations and movements of tectonic plates he would know how to estimate depth pretty well. To magma if it were pushing to the surface (when it's where it's supposed to be then no) he would know how to create pressure and occasionally compress things up to diamonds

He would also be relatively immune to the abilities of others because... earth can withstand everything after all

​Nya not water but rather air atmosphere... but limited only to that specific earth one... she would know how to work with barometric pressure to a certain extent with humidity so there she could maybe even influence the weather... but she would also feel those changes quite a bit