No, Scar killed Mufasa to become king. At the end of the movie, Simba killed Scar.-------------------------------------------------------------------------------------------------------No, Simba did not kill Mufasa. When Simba found Mufasa dead, Scar lied to Simba about causing his father's death because Simba didn't know what death is. By the way, "Simba killed Scar" is incorrect. The hyenas killed Scar because he called them the "enemies".--------------------------------------------------------------------------------------------------------No, Simba did not kill Mufasa. Scar lied to Simba about Mufasa'a death by saying Simba killed him but it was only because scar could be king. Simba did kill Scar the same way Scar killed Mufasa.In the movie Lion King, Simba did not kill Scar the hyanes did.