Marvel's Thanos is linked to 'Eternals' by bloodline, writes Thor

Thanos, the name itself reeks of something scary, and since we've felt his impact in Avengers: Infinity War and Endgame, we know it's for real. Now even though his MCU run has ended, seemingly, some fans have been long theorizing about a connection between him and Eternals, the upcoming superhero flick. And guess what? It's true. In fact, it was confirmed by Thor himself!

source https://www.newsbytesapp.com/news/entertainment/can-thanos-be-linked-to-marvel-s-eternals-movie/story