For the move of the same name used by Yoshimitsu and Kunimitsu in Tekken 1 and 2, see here.
Knee Bash (ココナッツクラッシュ Kokonattsu Kurasshu?, "Coconuts Crush") is a throw used by King I and Armor King I since the first Tekken game, before being given to King II and Armor King II.
Starting with the PlayStation version of Tekken, Armor King's version of the Knee Bash was slightly modified, making the opponent roll over after being slammed, instead of bouncing back on impact.
With King, the input was originally 1+3 in Tekken and Tekken 2, but as of Tekken 3, the input changed to d/f+2+3. The escape input is 1+3 in Tekken 2, and 1 in Tekken 3 and later games. Armor King's input remains 1+3 throughout the series and shares the same throw escapes as King.
In Tekken Tag Tournament 2, Armor King II can perform a special tag throw with this throw when partnered with Jaycee.
In Tekken 8, the animation of King II's version of the throw was updated.
