During the Credits
There are extra animated fighting scenes followed by an extra scene shown midway through the credits of Shazam!.
In the first extra scene, Dr. Thaddeus Sivana is shown in a jail cell scrawling various symbols on the walls when he hears a voice telling him how to obtain ultimate power. It is shown to be a large caterpillar sitting on the window to his cell. (This is believed to be Mister Mind.)
After the Credits
There is a stinger after the credits of Shazam!.
Billy (as Shazam) is shown talking to a fish in a fish bowl while Freddy circles something on a notepad saying, “Shazam can’t communicate with fish.” The two then argue if that is a cool superpower or not.
Special thanks to IceWarm for the stinger submission!