Alpha-sapphire: Voltorb is extremely sensitive—it explodes at the slightest of shocks. It is rumored that it was first created when a Poké Ball was exposed to a powerful pulse of energy.Omega-ruby: Voltorb was first sighted at a company that manufactures Poké Balls. The link between that sighting and the fact that this Pokémon looks very similar to a Poké Ball remains a mystery.Y: Usually found in power plants. Easily mistaken for a Poké Ball, it has zapped many people.
Prof. Lotus' Notes: It's shiny form looks like a great ball. A popular fan theory is Voltorb is a Pokeball possesed by a vengeful ghost Pokemon, and people are always quick to point out the similarities between Voltorb and Haunter when it comes to the eyes. However, one thing is certain, there is a link between Pokeballs and this Pokemon.