Guichu, Capychu + Aztek, Kwetzal

Guichu: It loves to ride wheels and to enter tunnels dug up by other Pokémon. The electricity they produce comes from the mixture of chemicals found in the plants they eat.
 
Capychu: This large rodent stores enough electricity to power an entire city for 24 hours straight. Water evaporates around it when it attacks.
 
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Aztek: They are spirits locked away in an idol, still able to release flames. They may be slow, but have a high resistance.
 
Kwetzal: A large version of this Pokémon was unleashed by Typhoon to wreck havoc on the surface. It started to attack the Akalakui tribe, when Chimera came by and seperated Kwetzal's energy all over the globe, creating several Aztecks (which can evolve into a miniature Kwetzal when powerful enough). They have now forgotten their origin and their goal in life.