In fact the name "corisco" seems like having come from the lightning stones (or fulgurites -fulguritos - some Brazilian guys would say). Then it seems like they "named" mainly horses as "corisco" more like an adjective turned into name.
I don´t know which the most usual names of horses that are agile, quick, perhaps they have "agile/playful/springer" etc. Don´t know for sure.
"Corisco" the Brazilian outlaw might have been named after the quickness for his tricking and hidding afterwards, but then, just a guesswork here.
Yes, "corisco" would be an apt name for a northeastern Brazilian superhero! LOL.