Prepared to be terrified. Eminem and Rihanna are dealing with their internal demons tonight at the 2014 MTV Movie Awards, and they just shared a sneak peek from their rehearsal.

Rih Rih sneers at the camera in Converse, a white tee and jeans, while Em leans on her shoulder, tipping his head back as if he were saying "just try to mess with me."

The duo will be unleashing their duet "The Monster" at the show, airing at 9 p.m. ET/PT on MTV. Unless, that is, Em goes with a rendition of Broadway hit ...

twenty one pilots will also perform at the show, playing "Car Radio," and Zedd and Ellie Goulding will team up to play selections from the "Divergent" soundtrack.

Start the summer movie season with the 2014 MTV Movie Awards, hosted by Conan O'Brien, Sunday, April 13 @ 9/8c! Get ready for the show with exclusive MTV Movie Awards Takeover movie previews. Then, during the 2014 Movie Awards show, watch our All-Access MTV Movie Awards Live Stream on MTV.com.

There's only a few more hours left until Conan O'Brien kicks off the 2014 MTV Movie Awards and there's a roster of Hollywood's finest joining in on the action. But before the actors come up to accept their Golden Popcorns, they're going to need a proper introduction.

That's where tonight's presenters come in. We'll see tons of celebrities like Amanda Seyfried, Ansel Elgort, Rosario Dawson, Self Rogen, Dave Franco, Cameron Diaz, Kate Upton, Leslie Mann, Miles Teller, Jordana Brewster and Aaron Taylor-Johnson go onstage to honor their colleagues.

However, these people need introductions too. So that's why I took it upon myself to do it for them. These are some A-listers you can look forward to at 9 p.m. ET on MTV:

Lupita Nyong'o

Age: 31

Movie Awards accolades: She's nominated for Best Female Performance this year. Wish her luck! Not that she needs it...

What she'll be presenting: Best On-Screen Transformation, which may go to either Christian Bale, Elizabeth Banks, Jared Leto, Matthew McConaughey or Orlando Bloom.

Where you'll see her next: Nothing official yet!

Shailene Woodley

Age: 22

Movie Awards accolades: She's new to the Movie Awards.

What she'll be presenting: Woodley will join her "The Fault in our Stars" co-star to introduce twenty one pilot's performance of "Car Radio."

Where you'll see her next: She'll be in "The Fault in our Stars," out June 2014.

Jared Leto

Age: 42

Movie Awards accolades: This is Jared's first time at the MTV Movie Awards, where he is nominated for Best On-Screen Duo with Matthew McConaughey and Best On-Screen Transformation in "Dallas Buyers Club."

What he'll be presenting: ...

Brace yourselves: another wedding is coming to

Tonight's installment, titled "The Lion and the Rose," features the long-awaited, much-hyped nuptials of Joffrey Baratheon and Margaery Tyrell. It's the third "Thrones" wedding in five episodes, the second "Thrones" wedding in King's Landing, and the first "Thrones" wedding since the night Robb Stark lost the war and his head.

But it's not all matrimonial merriment tonight on "Thrones," as the episode's synopsis reveals:

Tyrion lends Jaime a hand. Joffrey and Margaery host a breakfast. At Dragonstone, Stannis loses patience with Davos. Ramsay finds a purpose for his pet. North of the Wall, Bran sees where they must go.

What does all of that mean? Let's break it down with a few predictions for tonight's episode:

1. Tyrion lends Jaime a hand.
Let's not take this one too literally. After all, Jaime just received a new hand in last week's premiere, thanks to the golden limb affixed to his stump by Maester Qyburn. Instead, let's look at this as Tyrion helping Jaime out with a problem. What's Jaime's biggest problem right now?

Cersei is an issue, for one. But there's not much Tyrion can do in that realm, since his "sweet sister" has nothing but hate in her heart for the Master of Coin. Still, it's been a long time since Jaime has been in the company of a woman — and based on past experiences, we know Tyrion can make arrangements in that department.

Is Tyrion about to go from Imp to pimp? Or is something else going on here?

2. At Dragonstone, Stannis loses ...