Erik Todd Dellums (born September 23, 1964) is an American actor and narrator. On television, he is known for playing the drug kingpin Luther Mahoney on Homicide: Life on the Street (1996 - 1998) and Dr. Randall Frazier on The Wire (2002 - 2004). He voiced Koh in Avatar: The Last Aribender (2005) and Aaravos in The Dragon Prince (2018 - 2024). Dellums also has performed voice work in video games, including the roles of radio DJ Three Dog in the Fallout 3 (2008), Nazir in Skyrim (2011), and Princ...