Board Thread:Questions and Answers/@comment-216.227.94.145-20130303214212/@comment-24.171.168.129-20130325135226

Maybe the reason that the Kraang can't breathe the air is Psychological and they need April as incentive to her father or it could be that April has an important gene in her that they need and when they couldn't capture April they captured her father as incentive to her. It may also be possible that they captured her father to see if he had the gene they needed but when he didn't they tried to get April to see if she had it. By the way the fusion of the spy roach could suggest that the kraang has successfully altered their Mutagen and now if it gets on inorganic objects it could mutate them spelling trouble for the Turtles