Your character will look like Charisma, but you will still be able to glide like Batman and use all of Batman's gadgets and special takedowns. An example is of a mesh swap could be swapping out Batman's skin with Johnny Charisma's skin. In a mesh swap, you will still have the same animations and skill sets as the original character, but you will now be playing with a different, possibly non-Batman skin. The term 'mesh swap' refers to running a code to swap a mesh (aka skin aka model) of the current player character with that of another mesh. Note that the character swap also carries over Harley's animation and idle lines. In other words, in a character swap, you can have Harley Quinn instead of Batman clear out the mixing chamber inside Ace Chemicals with her bat and mayhem mode.
The term 'character swap' refers to running code to replace Batman and all his moves and animations with that of another playable character. There are several phrases you'll see when talking about modding Batman: Arkham Knight.
