It looks like the last two characters to be released are Phineas & Agent P. They're out in a set at Gamestop starting 3/14/14 (last I heard). Amazon/Best Buy/Target/etc will have the set 4/1/14 and individual figures 4/29/14.
There are no other slots in the game right now for characters. I'm thinking they'll do this like Skylanders where they release a game every year or so. Marvel & Star Wars sets are in development now. Since there's Cap 2, Guardians of the Galaxy, and Avengers 2 movies all coming out in the next year and a half & they acquired Marvel before Star Wars, I'm guessing the Marvel Infinity game is next. MARVEL PLZ HERE TAKE MY $$$$$....
And or they will make them compatible with this game... At least I hope that the next Infinity will take the same stance as Skylanders and make their games backwards compatible with the existing characters.
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