Halo: Infinite - Will The Yonhet Be Part of the Covenant? Who are the Yonhet? Here's everything you need to know about the newest Halo aliens. As Halo Infinite draws ever closer (at least, I hope–there’s still no set release date) 343 Industries keeps giving us more glimpses. Today it was the Yonhet. After Microsoft made the smart decision to delay Halo Infinite into this year, they have been working on ways to keep the game in people’s heads. Through social media posts, community updates, and putting Master Chief in Fortnite, Microsoft is definitely moving in the right direction in terms of reminding people that the game exists.