When 'Glee' tackles Michael Jackson covers in their upcoming tribute episode, things are going to get 'Bad' -- if you catch our drift. The episode is said to be packed with as many as 10 MJ renditions, and a whole bunch of drama, which is why they're pimping out the show with two new TV Guide covers.

Rachel, Santana, Kurt and Blaine look pretty slick decked out in genuine MJ-style gear on their double cover spread, and if that's not enough to get you to tune in when the show airs later this month, what we're about to spill will be.

In the Michael Jackson tribute episode, newcomer Grant Gustin -- who plays the sneaky boyfriend stealer Sebastian -- will try to dig his claws into Blaine once again ... and piss off all of McKinley High in the meantime. "For this episode, it’s everybody versus Sebastian," Kevin McHale, who plays Artie, explains to TV Line. "He’s our first male villain. Adds Gustin, "I do a majorly douche-y thing to one of the characters. So first off the fans are against me, and now the whole cast is against me." Well, now you know not to piss off the gleeks!

In other news, don't expect Sue or Emma to show their faces in this ep, but you can anticipate Sam and Mercedes to get together ... on a duet, anyway. The two former lovebirds are said to be performing a MJ and Nat King Cole mash-up, 'Human Nature/ Nature Boy.'

Oh, and Mike gets to let out some pent-up frustration! "Everyone gets to contribute in their own way,” says Harry Shum, Jr. said of the MJ ep -- and his duet with Artie on the MJ/Janet J. collab, 'Scream.' "It’s going to be a fun duet. And that particular song has so much anger and angst about all these things that have built up, and Mike Chang has a lot of pent-up anger he couldn’t express, so you’re going to see a lot of explosive dance moments."

We can hardly contain ourselves! The Michael Jackson tribute episode is said to be airing at the end of this month.