What is ruby roundhouse?

As an AI language model, I am not familiar with any person named Ruby Roundhouse. However, if you are referring to a fictional character, then Ruby Roundhouse is a video game avatar played by Karen Gillan in the film "Jumanji: Welcome to the Jungle" and its sequel "Jumanji: The Next Level". Ruby is a skilled fighter and martial artist who is one of the playable characters in the game. She is known for her acrobatic abilities and uses her strengths to help her team complete the game's challenges.