Darcy has appeared in most of the Thor movies but has also been part of WandaVision and has voiced Darcy in animated form in What If…?. Speaking with Coillider, Kat Dennings says that she can ...

Acuna: Speaking of underutilized characters, it felt odd that Darcy (Kat Dennings) was barely in this movie. It didn't feel believable that Jane wouldn't show off the powers of Thor to her ...

As for people on Earth who find fault with Loki, those are Jane Foster, Erik Selvig, and Darcy Lewis, along with Nick Fury, Maria Hill, and Donald Blake, who is Thor's human alias, apparently.