Fooruman is part of the Foo Movies, not the game. Ambesoft wants to keep the story based on the original JJ3 one. Besides, the terexin sprite wouldn't make any sense if it were to be included in the game.
In fact, adding the foo movies, which are more part of the community than the JJ universe, won't make much sense either.

Unless Ambesoft is considering to do anything with fooruman or the terexin sprite, we should keep Fooruman and JJ3 separated.