Wyldstyle

Wyldstyle was used as a "test subject" on Meet That Hero! by Supergirl, who sought to prove that although elaborate disguises could be fun, a pair of glasses could do the trick.

Supergirl showed the other woman a framed portrait whose subject she readily recognised as Superman, before switching it out for a picture of Clark Kent (essentially just Superman wearing glasses), who baffled her completely. E.T., also witness to the test, was appalled by her apparent lack of memory for faces. (WC: Supergirl Meets E.T.)

Behind the scenes
Wyldstyle, originally from The LEGO Movie series, was a major supporting character in the video game LEGO Dimensions, alongside the Twelfth Doctor. WC: Supergirl Meets E.T. is implicitly set in the continuity of LEGO Dimensions's world-hopping adventures: hence, Wyldstyle, Supergirl, E.T. and the Doctor are all from different dimensions in the same multiverse. However, this information is not present in Supergirl Meets E.T. itself, and the LEGO Dimensions video game is not considered a valid source by this Wiki.