Eisenberg is next-level terrible as Luthor. He’s a twitchy lunatic pretty much from the start, and if there are any events in the story that lead to him escalating his plot to the point of creating an unstoppable monster I missed them. Eisenberg delivers every line like he thinks the villains on the 1966 Batman show were too nuanced. His face is a collection of tics, and his eyes burn with the power of a thousand ham actors. Not only is his performance unmodulated, he’s generally irritating at all times - while I don’t understand why Lex Luthor wants to unleash an unstoppable monster on the world, I do fully understand why Batman wants to fucking hit him.