Can you delete skins in arkham knight?

If the DLC is question is *just* skins you won't save much space. Skin files are just graphic replacements that go over the character model. Unless they change animations they are generally less than a megabyte in size. (If the DLC adds more than just skins, the DLC could be much larger.)

Further complicating things, unlike the PS3, the PS4 lumps everything together. All you can do is delete the whole game, then download just the parts you want.

You might want to look at something else to delete instead, such as old games or saves, or attaching an external hard drive for extra space.

The PS4 doesn't give you a way to delete individual DLC. All you can do is delete the whole game and then redownload the parts you want. Or find something else to delete to free up space.

You can also plug in and use any USB 3.0 hard drive that's at least 1 TB, and the PS4 can use it for additional game storage to give you more room without the hassle of upgrading the internal hard drive.