David Harbour Gives Oscar the Grouch 'Joker'-Style Origin Story on 'Saturday Night Live' - Watch!

David Harbour is giving Oscar the Grouch a back story!

While hosting Saturday Night Live, the 44-year-old Stranger Things actor gave the Sesame Street character an origin story in the form of a Joker parody.

In the fake trailer for Grouch, we see David as Oscar picking up trash bags in typical bad mood not before long he’s wearing green face makeup, aiming a gun at the camera an crawling into his trash can.

“If everyone calls you trash, if everyone treats you like trash, why don’t you just become trash?” David as Oscar says.

The trailer also features SNL cast members dressed up as other Sesame Street characters.