CatNap also known as Experiment 1188 or Theodore Theo Grambell, is the secondary antagonist of the Poppy Playtime franchise, serving as the main antagonist of the first game's third chapter: Deep Sleep.

He is a monstrous life-sized Toy recreation or version of one of the members of Smiling Critters series of toys of Playtime Co.. In reality, he is an orphaned child that was experimented on as part of the Bigger Bodies Initiative to serve as the protector of Playcare, the company's on-site orphanage. CatNap is completely loyal to the Prototype due to him saving his life when he was still human, worshipping him like a god and killing the heretics who don't follow him.