‘Supergirl’ EP Says Season 2’s ‘Biggest Surprise’ Was Lena Luthor

“Supergirl” executive producer Andrew Kreisberg admitted that they didn’t expect that fans would respond very positively to Katie McGrath’s Lena Luthor. In a featurette teasing the upcoming Season 3 of the CW series, Kreisberg said that the “biggest surprise” for them last season was the viewers’ reaction to McGrath’s character. “I think probably the biggest surprise…