"Mekk-Knight", known as "Jack-Knights" (ジャックナイツ, Jakkunaitsu) in the OCG, is an archetype of LIGHT monsters debuting in Extreme Force. The archetype is both related to and supported by the "World Legacy" archetype. All members of this archetype are Psychic monsters, except for the following:


This archetype is related to the "World Legacy" and "World Chalice" archetypes, as shown in the artwork of "World Legacy Key" and "World Legacy Scars".

Each Main Deck monster has a color of the rainbow that appears in the artworks of "Mekk-Knight Spectrum Supreme" and "World Legacy Pawns".


Color Mekk-Knight
Red Red Moon
Orange Orange Sunset
Yellow Yellow Star
Green Green Horizon
Blue Avram
Blue Sky
Indigo Indigo Eclipse
Violet Purple Nightfall
Visible spectrum Spectrum Supreme

Playing style

All "Mekk-Knight" Main Deck monsters share the following effect:

  • "If 2 or more cards are in the same column, you can Special Summon this card (from your hand) to that column."

Thus the archetype relies on Special Summoning high level monsters while there are two or more cards in the same column to swarm the field and generate hand advantage. "Mekk-Knights" has a Kozmo Town-like recovery method in the form of "World Legacy Key". The Field Spell is very powerful against Extra Deck reliant Decks; but otherwise fares poorly against Deck (or Deck variants) with no Extra Deck monsters such as Kozmo, Monarch, BLS, Nekroz, or True Draco and is resource-intensive.

Recommended Cards

Recommended cards

Official Decklist

Konami's "Mekk-Knight" Deck[1]


  • Cards that prevents the player from Special Summoning can hurt the Deck's capability to swarm. Examples include the "Vanity's" series, "Archlord Kristya", "Heat Wave", etc.
  • "Ally of Justice Catastor" can instantly destroy this archetype's monsters since they are all LIGHT monsters.
  • "Lose 1 Turn" make "Mekk-Knights" more vulnerable to destruction.


Given the JRPG theme used by the World Chalice monsters, it's likely the Mekk-Knights were based on the Mechon from Xenoblade Chronicles: A race of mechanical beings living on the titan of Mechonis.