Post-Credits Scene: Batman Beyond 2

The scene after the credits of Batman Beyond: Under the Red Hood

A man walks in a desert with a group of people having a cookout. The man who is a party goer find a mysterious ring in the desert. He digs it up. It appears to be a Green Lantern ring.

Party-goer: What the hell?!

He picks it up. He puts it in his middle finger. It does not work(supposing the ring belongs to it's master) and he takes it off and throws it. Unknown by the Party goer, the ring floats off the ground.

The End.