Zaydon:  Let me learn about this interesting mythical Pokemon in the 21st Pokemon Movie.

   5 minutes later...

Zaydon:  Alright, it says that "you’ll learn that the feline-looking “Thunderclap Pokémon” moves around like a lightning bolt; but unlike most Electric-type Pokeémon, it lacks the ability to actually make its own electricity. “However, it is able to gather and store electricity from outside sources, then use it as its own electric energy,” its description reads. “When it uses massive amounts of electricity, its fur stands on end all over its body.”  So.....that's about it for Zeraora.