The answer to that question is... maybe! According to TV Line, young Levi Miller will play Cat Grant's (Calista Flockhart) son Carter, who is set to debut in episode 4 of Supergirl. Now in the comics the son of Grant and her ex-husband Joe Morgan was named Adam - but the site makes it a point of mentioning this character is "independent of Adam Morgan." So, whether Carter becomes embroiled in the same Toy Man plot that eventually costs Adam his life in the source material remains to be seen.
Carter is described as a “sensitive and shy” and “couldn’t be more different from his mom.” As Melissa Benoist’s Kara babysits her boss’s son and gets to know him better, “Carter finally opens up to her — revealing his true feelings for Supergirl.”
Awww. Supergirl premieres on Monday, Oct. 26, at 8:30/7:30c, before moving into its regular Mondays-at-8 time slot on Nov. 2.