RWBY

 (pronounced "ruby") is an American animated webseries produced by Rooster Teeth Productions. It was created by the late and premiered on July 18, 2013. The series follows a team of girls led by the series' protagonist Ruby Rose, as they train to become warriors called Huntresses and defend their homeworld of Remnant from ancient villains and dark monsters.

The series is notable for having Casey Lee Williams provide vocals for the series' soundtracks since the premiere, as well as providing the singing voice for series character Weiss Schnee. She is also is the official vocal credit for series villain Neopolitan; despite the character being mute, Williams provided her grunts and noises in the 2018 crossover video game BlazBlue: Cross Tag Battle. Her father, Jeff Williams, serves as the primary composer for the series. As of 2018, for the series' sixth season, Casey Lee Williams has intermittently worked with her father for composing for several episodes.

In 2019, for the series' seventh season, Ok Goodnight is mentioned by name in the lyrics of the soundtrack song "Celebrate", which Williams provided the vocals for.

In 2020, for the series' eighth season, in the episode "Midnight", Ok Goodnight's song "Awake" was used in a flashback of the villain Cinder Fall, playing after she kills her abusers and comes to a new understanding about herself; the song was the first to be featured in the series that was not written and composed with the show in mind. It is possible that Ok Goodnight as a whole will continue to have connections with Rooster Teeth Productions and the series.