A new street art exhibit in Harlem is truly off the wall.

The Martinez Gallery on Broadway is hosting works by Mina and Bruce.

They're an artist couple that has combined their different styles into graffiti they call "throw-up characters."

They're letters turned into caricatures of celebrities like Tupac and Mike Tyson.

Now wood cut outs of the couple's work have placed around the neighborhood to get reactions from New Yorkers.

The gallery's owner says it's a throwback to the early days of street art.

"They went back to their roots, the early '70s. The use of characters and animation, from Hanna-Barbera, from Marvel Comics, etcetera."

To learn more, go to martinezgallery.com.