During the Credits
There are colorful animations of weapons as cast names appear on screen.
There is also an extra scene midway through the credits of Suicide Squad.
In the extra scene, a meeting is shown between Amanda Waller and Bruce Wayne. She gives him a file about metahumans and hints that she knows his secret. He replies that if she disbands her crew then he and his friends (the Justice League) will take care of the job for her.
After the Credits
There is no stinger after the credits of Suicide Squad.
Special thanks to Josh Logan, bousier, Erwin Kiekens, and The Chad v1 for the stinger submissions!