Funko debuted their new 3 3/4-in action figures in their Suicide Squad themed DC subscription box a couple of months ago.  Now it looks like they are adding the rest of the squad to the mix.  These are similar to their Reaction style figures but with more articulation.  My kids already claimed Harley and Joker from my box so I am sure they will want to have these too.    You can get the whole squad, and even Batman.  I sure these will not be readily available at big box stores, so online and your local comic shop are the best bets.  If you missed Harley and Joker they are very reasonable on the eBay.