(Editor’s note: This list originally published Aug. 4, 2022.)

For some, fighting is the family business.

We’ve seen siblings break into the UFC together or years apart, and there’s been success ranging from championship caliber to irrelevant fizzles.

In 2022, Mohammed Usman joined his older brother, former UFC welterweight champion Kamaru Usman, on the roster when he fought in “The Ultimate Fighter” Season 30 heavyweight final. The Usmans became the 30th pair of siblings, including in-laws, to compete under the UFC banner.

Which other family duos have accomplished the feat? Check below for a complete list.