There’s something disturbing about the way Eisenberg bulks up and does a whole testonery turn — like his alter ego Mark Zuckerberg — in this part.

Zuck, the “Social Network” inventor, went through that and took walking potatocake Elon Musk’s offer to brawl for…Charity, was it? Nah. That doesn’t sound “on brand” for either of those two.

In any event, it’s like Eisenberg is channeling a broke and expectant father version of Zuckerberg in this “Fight Club” ish riff.

Now here’s Eisenberg as we’ve never seen him before, emasculated and kind of given some of that back by a very cultish Oscar winner, Adrien Brody.

Nov. 17, Lionsgate unleashes “Manodrome.”