Lammy and Mr. Pickels are new characters introduced to celebrate the 10th anniversary of the series. Lammy is a lavender lamb who wears a white wool sweater. She enjoys tea parties and playing make-believe with her imaginary friend Mr. Pickels, a real-life pickle she imagines with a top-hat and mustache. While Lammy is a very sweet and good-natured character, Mr. Pickels likes causing mischief and even killing other characters. Whenever Mr. Pickels seemingly does something wrong, Lammy is left to appear as if she is the one responsible, and is usually deemed crazy by others when she tries to tell them that Mr. Pickels is to blame. Despite this, Lammy and Mr. Pickels remain close friends.
Lammy is believed to be schizophrenic, with Mr. Pickels a dark persona Lammy struggles to fight while she unintentionally causes mayhem, comparable to Flippy's split personality.