Lisa Loud

Lisa Marie Loud is one of Lincoln Loud's ten sisters in the Nickelodeon animated series The Loud House. Although she is the second-youngest of the Loud siblings, at only four years old, she is also the smartest, having graduated college with a PhD and received a Nobel Prize despite her age. Speaking with a lateral lisp, Lisa spends her time invested in research, projects, and working on complex experiments, which often involve using her siblings as test subjects.

As one of the show's main characters, Lisa will naturally appear in the show's Christmas episode, "11 Louds a Leapin'". However, the exact details of her role in the episode are currently unknown.