>>24564303I can be the source myself, if you want. In this scene, Xerosic is explaining how there are two Zygarde Cores, with the one in its Core form in the pop-up window on the right being codenamed Z-1 and the one in its Zygarde 50% form in the main screen being codenamed Z-2. I'm sure you could find many other places that talk about this like the Pokémon Anime Discussion Thread on here or various different forums, but if you want 100% reliable confirmation, wait for subs.
