i think that terra aqua and ven were apart of an experiment that went wrong.i think mx was trying to combine a heartless with a nobody.that is what terra aqua ven and the ds is.but the ds is the only one that was ok.terra was the first one made thats why he was called mxs avenger.and why he wanted to kill mx.he was mxs first creation and mx still rejected him.i think all the wrong ones created an organazation or army calling themselves chasers.and the right ones were the ones against the chasers.mx xreated the right experiment army.and bothe that one and the chasers fough.the keyblade war.i think what ever happens after bbs causes mx to lose his memories.and then he started gaining them again and remembered the experiments.so he tried recreating them.the reason he started remembering them was because he saw aqquas armor in kh2 fm.and those experiments were what ansem told him to stop.