Elmo Kennedy O'Connor (born January 11, 1994), known professionally as Bones (stylized sometimes as BONES), is an American rapper, singer and songwriter from Howell, Michigan. He is also the founder of the music collective TeamSESH.

O'Connor is known for his pioneering work in sub-genres of hip-hop referred to as emo rap and trap metal. Since 2010, O'Connor has released an extensive discography and developed a large fan base. As of 2019, he has released over 80 albums, mixtapes and EPs across several aliases.

Elmo Kennedy O'Connor was born in Marin County, California, to a mother who designed clothing and a father who was a web designer. His maternal grandfather was actor Robert Culp. His family lived in Muir Beach, California, before moving to New York City. When O'Connor was seven years old, his family moved to Howell, Michigan. O'Connor also lived in Minnesota for two years when he was thirteen. Around this time he met fellow artists Xavier Wulf, Chris Travis, and Eddy Baker online. The four artists would later come together to form the collective Seshollowaterboyz.