無界 무카이
The true final boss of [[The King of Fighters 2003]].

He supposedly masterminded the events behind [[Orochi (KOF)|Orochi's]] unsealing in that tournament as a member of Those From the Past. His principle goes "Never underestimate humans", so he fights the KOF winners to test their strength.

He also helped puppeteer [[Botan (kof)|]] into manipulating [[Kagura Chizuru]] (in 2003) and [[Rose Bernstein]] (in [[The King of Fighters XI|XI]] and [[The King of Fighters XIII|XIII]]).

He also wanted to challenge the winning team in XIII, only to be defeated by the true leader of Those from the Past, [[Saiki (kof)|]]. This, in turn, awakened Saiki's true power and created a gate that resets time when anyone enters it.

He fights using stone. He can create stone pillars from the ground, summon a boulder from the sky, or [[petrification|turn his opponent into stone]].

He is often paired with [[Touhou]]'s [[Hinanawi Tenshi]], due to their geokinesis abilities.
mukai (kof)