Regarding the assistent.
He was a hardworking, but somewhat talantless fellow. You know, the kind that are always stuck as assistents, helpers, and such. No matter what he did he did not feel himself equl to Atsuko. He loved Atsuko, he feared her for she was much smarter then him, and he hated her and the fat guy because both Atsuko and fatso were geniuses outside of the realm of normal people.
He wanted her so badly that he sold himself to chairman. Notice, how badly he reacted to beign called gay and how disgusted he looked finding gaymagazines in that crazyguy place. He didnt want to be fucked in the ass, he chose it only to receive power from chairman.
And the chairman wanted power over dreams to be a new god and to grow a pair of nice functional legs. He was anti-technology not because it could disrupt others dreams, but because it could go against his dreams.
But I have no idea why baby-Atsuko ate chairmans dreams, other then "love always wins lol"