Lola Sunderguard is a character who appeared in The Note. Milo accidentally finds her doctor's note instead of his. Lola, her two friends, and a pig, intentionally look and behave similarly to Milo, Melissa, Zack, and Diogee respectively.
While Milo and Lola seem happy and baffled to meet each other, Melissa and Zack greet their look-a-like with a simple "Hey", while Diogee and the pig seem surprised by each other.
Although possibly a joke, Robert F. Hughes mentioned that Lola's pig's name is "Pee-eye-gee".