Registered records for Raditz before world filtering: death 1, killing 1. Counts describe entries, not people or lifetime totals. Death sources include Chapter 204.
The filter uses the world where the event occurred, not the character’s origin. Distinct future branches remain separate entries.
Goku restrains Raditz while Piccolo defeats him with the Special Beam Cannon and a follow-up attack. Goku's assistance is not added to his direct killing count.