Since Peni Parker is an eastern hottie in a hentai parody then she has just one true weakness (besides staying skinny and flat even after hitting the adultness) - she conveniently succumbs to tentacles! Otherwise just how else could you explain that her close friend and her protector controling the spider-themed battle robot is aiding to hold her instead of rescuing her? Due to the fact that no means Peni will fight such strangely shaped mechanical tentacles without fucking them!