The Mandalorian season 3 teaser teases more Order 66 flashbacks and a troubling notion about who saves Grogu.

Since Grogu was smuggled out of the Jedi Temple on Coruscant during the purge following Anakin Skywalker's murder, his backstory is tied to Order 66.

The Mandalorian and The Book of Boba Fett have made this a significant mystery, so many people suspect who saved Grogu.

The Mandalorian season 3 trailer reinforces the most troubling theory: Anakin Skywalker.

Anakin may have spared the baby from the massacre due to his inner anguish and the kid's likeness to Yoda.

Star Wars has retconned Order 66 and Anakin's arc. StarWars.com has called Darth Vader 

A "anti-hero" and examined his dualism, which might include saving Grogu during Order 66.

The Mandalorian season 3 teaser lends weight to Anakin saving Grogu during Order 66, a massive Star Wars retcon.

It again shows Grogu's flashbacks to the purge, with several Jedi before him with lightsabers, and it sets up Anakin's appearance.

The scene looks like a lightsaber is being used to cut through the door by some unexplained attack

And because it's during Anakin's strike, his being on the other side wouldn't be surprising.