Can anyone tell me something about these minifigures? Are they custom-made or perhaps fake? I could find nothing about them.
After scouring all of the Batman minifigures catalogized by Brickset, I couldn't find any exact matches for any of the two torsos, but it is just as possible that these particular figures are not indexed by Brickset or have some kind of other name.
The wings of the right one seem peculiar to me, I suspect they are non-genuine.
Higher resolution photos could be helpful for further investigation, or you could check for the LEGO trademarks on each piece (they are usually hidden inside or on the underside) to determine if the base plastic pieces are genuine. If they are, the printing might still be 3rd party.