Sprite generation

I'm pretty sure that Insurgence uses Gen 4 sprites, but where do you get the sprites for Gen 5/6 pokemon or megas? I want to make a few Deltas, but I want to use the correct sprites.

Insurgence uses a combination of different gen sprites.

Are there files in the game or on the website that have all the pokemon sprites that I could download? Where would I find them?

The pokemon insurgence folder has all of the sprites in /Graphics/Battlers

Where do I find the files on a Mac?

drive_c-Program Files-Pokemon Insurgence 1.1-Graphics-Battlers. Your welcome.