The Princess Rapunzel was a famous fictional character in at least some universes. An iconic element of her story was using her improbably long hair to allow people to rappel up a tower.
Jenny Everywhere once suggested getting into a locked castle by having Lord Thymon fly up to a window, and then use his tentacles like Rapunzel's hair. Though he ended up rejecting the suggestion for unrelated reasons, Thymon's initial reaction was one of sheer bafflement; as he explained, “I have been compared to many entities of legend, but I have to admit that the princess Rapunzel… is a first”. (PROSE: Family Business)