'Glee' Loses Original Cast Members Heather Morris, Mark Salling, and More

Looks like the New Directions will have a lot of spots to fill next year. Four of Glee's original cast members will not be returning for the show's upcoming fifth season, TV Line reports. The departing characters include Amber Riley's Mercedes, Mark Salling's Puck, Harry Shum, Jr.'s Mike and Heather Morris' fan favorite Brittany. Dianna Agron, who plays Quinn, also does not plan to return. Guess that means we'll be seeing plenty of Rachel in New York next season. Yay.

In honor of the singers who have stuck with Ryan Murphy from the beginning, here are some of their best performances from the past four seasons:

Amber Riley, "Bust Your Windows"

Mark Salling, "Sweet Caroline"

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Harry Shum, Jr., "Sing!"

Heather Morris, "I'm A Slave 4 U"