https://wccftech.com/super-mario-odyssey-datamined-content/

Super Mario Odyssey, the latest platform game starring the popular Nintendo mascot, is a massive game filled with content, but plenty of unused stuff has been discovered in the game these past few months.

Recently, a brand new video has been released online, showcasing unused content found in the game. Some of the costumes are clearly unfinished, but most are actually fully working, so there’s a good chance that they will be released officially in the future.