'Teen Mom OG' Cast: Everything to Know About New and Returning Members Before Premiere

There will be some new faces on Teen Mom OG when the reality show returns to MTV in October. The network announced the addition of two new cast members, MTV alumni Cheyenne Floyd and Corey Wharton, in an Instagram post on Thursday.

The parents previously appeared on MTV's The Challenge: Rivals III together. Although their romance on the show was short lived, the former couple revealed they had a daughter together in December 2017.

Floyd first made a name for herself after appearing on Season 3 of Are You the One. Wharton additionally appeared on the subsequent seasons of The Challenege including Invasion, Dirty 30, Champs vs. Stars and Vendetta.

In addition to Floyd and Wharton, it was also recently revealed former Alaska Governor Sarah Palin's daughter Bristol Palin would appear on the upcoming season. Her former fiancé Levi Johnston, with whom she co-parents 9-year-old son Tripp Johnston, is expected to appear on the show as well as Levi Johnston's wife of six years, Sunny Johnston.

The new additions to the cast replace previous members who had departed. Farrah Abraham, a longtime member of the Teen Mom franchise, announced she was fired from the reality series back in November. The 27-year-old alleged MTV's parent company Viacom fired her because she works as an adult film actor and said she'd have to quit her pornographic career if she wanted to continue appearing on Teen Mom OG.

Abraham was one of the original cast members of former MTV reality series 16 and Pregnant, which debuted in 2009. That same year she was cast in the spinoff series, Teen Mom, which documented the day-to-day lives of young mothers raising their children.

Ryan and Mackenzie Edwards also announced they would not return to the series in June after accusing the network of misrepresenting them. Briana DeJesus also announced her exit from the show following a season full of conflict with Kailyn Lowell, who is expected to return for Season 8.

Cast members Catelynn Baltierra, Amber Portwood and Maci Bookout are also slated to return for the new season.

Teen Mom OG returns to MTV on October 1 at 9 p.m.

Everything to Know About 'Teen Mom OG' Cast
Find out who's returning and joining the cast of "Teen Mom OG." Courtesy of MTV