Except for the family names of Japanese/Japanese-Filipino characters, all the family names of Filipino main characters are taken from family names of popular male actors - Padilla, Montero, Rosales, Santiago.
The role of Kim Chiu and Gerald Anderson were only added after their popularity surged due to Pinoy Big Brother Teen Edition.
The title comes from the Filipino word for "shaking or jiggling back and forth" and it can be explained in one of the setting's two houses which leans from side to side like a rocking chair.
Most of the cast have appeared previously as contestants of incarnations of Pinoy Big Brother: Keanna (the winner of the Celebrity Edition); Kim Chiu (the winner of the Teen Edition); Gerald Anderson (a runner-up in the Teen Edition); Zanjoe Marudo (Celebrity Edition); John Prats (Celebrity Edition), and Jason Gainza (of the show's first season). Pokwang,m while not a contestant, was part of Pinoy Big Brother's spin-off, Pinoy Big Brother Buzz.