Yuka Koyama

Yuka Koyama (小山 裕香, Koyama Yuka) is a Japanese voice actress who provides the Japanese voices for Helena Douglas, Niki, and Lauren.

Roles in Dead or Alive

 * Dead or Alive 2 (1999-2000) - Helena Douglas, Lauren
 * Dead or Alive 3 (2001-2002) - Helena Douglas
 * Dead or Alive Xtreme Beach Volleyball (2003) - Helena Douglas, Niki
 * Dead or Alive Ultimate (2004-2005) - Helena Douglas, Lauren
 * Dead or Alive 4 (2005-2006) - Helena Douglas, Niki
 * Dead or Alive Xtreme 2 (2006) - Helena Douglas, Niki
 * Dead or Alive Online (2009) - Helena Douglas
 * Dead or Alive Paradise (2010) - Helena Douglas
 * Dead or Alive: Dimensions (2011) - Helena Douglas