Board Thread:Questions and Answers/@comment-7042477-20130309104327/@comment-6028837-20131007190234

Shadowturtle wrote: they needed april, because she has a special type of mental energy that is uniqly in tune to this universe. the kraang captured her father to use as bait to luer april to them rather then going after her themselfs. but when that didnt work they placed a mind control device on her father, and allowed donnie and the others to rescue him. the kraang were smart enough to realize that the turtles wouldnt expect aprils father to do anything wrong and they knew april trusted him as well as he is her dad. so when the turtles were out trying to save the world, they had kirby(aprils dad) bring her to them.

that mental energy stuff still dosent explain much, like why she was immune to those mutagen chemical stuff and why she heard that kraang machine.