Jon Cryer's Lex Luthor actually works in his Supergirl debut

The A.V. Club

"I wasn’t hugely blown away by Cryer’s take on Lex in the opening flashback, but he locks into a much more successful tone in the present day stuff," says Caroline Siede. "Cryer is a fairly mannered actor and Lex’s illness gives him plenty of mannerisms to play up. The best parts of the episode explore the complex brother/sister dynamic between Lex and Lena. He argues it was his judgmental nature that pushed her to greatness before offering a more genuinely sentimental compliment too. She agrees to work with him on the Harun-El serum without going so far as to say she actually trusts him, although his sudden but inevitable betrayal clearly still stings. Cryer sells the hell out of Lex’s final Watchmen-inspired 'I took the cure 10 minutes ago' monologue, and his climactic escape sequence is a really fun bit of supervillain action."

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