This part of Animal Crossing: New Horizons Guide explains everything you need to know about Beau including the character, Christmas, and clothes. For details on everyone else, be sure to check out the Villagers and Other Characters page.
This page contains a list of all the Mario-themed items that will be coming to Animal Crossing in the February 25 Update. Please note that the same items are not available for purchase until March 1st. For more information, see How to get Mario elements.