VIDEO: Which Bachelor Pad 2 Contestant Will Shock Viewers? Former Cast Members Weigh In

What do you get when you put two formerly engaged couples in a house with 14 other singles? An entertaining disaster known as Bachelor Pad 2.

Chris Harrison: Bachelor Pad premiere will be three hours

After an explosive breakup, Vienna Girardi and Jake Pavelka are reuniting for the reality show, and Girardi is joined by her current boyfriend, The Bachelorette's Kasey Kahl. His Season 6 castmate Craig Robinson tells TVGuide.com in the video below that that there's definitely some animosity there — which is the understatement of the year if you've seen the preview.

Robinson adds that the man known for his "guard and protect your heart" tattoo will shock viewers — in a good way. "Kasey Kahl is going to surprise everyone," Robinson says. "That's another guy that came across as a crazy, and he is crazy, but he's the most lovable kind of crazy there is. ... He's going to guard and protect the entire house."

See photos of the Bachelor Pad Season 2 contestants

The Bachelor Season 15's Ashley Spivey adds that viewers will see a whole other side to her former castmate Michelle Money, who famously "threatened" to elbow her competitors.
"The girls will be surprised by her and I feel like this is her redemption," she says.

In our second video, Robinson and Spivey discuss the return of Justin "Rated R" Rego and ponder why Gia Allemand would ever return for Round 2. Plus: Who's Spivey putting money on for the first fight?

Bachelor Pad 2 premieres Monday at 8/7c on ABC.