Here are some close-ups of two of the minifigs from The LEGO Batman Movie range already for sale on eBay: Above, The Riddler in a beautiful green costume with pad printing on his arms and below, Batman, with the detail of his two facial expressions.
The listings state that these two minifigures are included in set 70912 Arkham Asylum . However, it seems to me that The Riddler only comes in a prisoner's outfit in that set.
The seller will probably have other minifigs from the same range to offer, you can keep an eye on their listings at this address.
