|Great Mecha King|
|Japanese:||グレートメカオー (Gurēto Meka Ō)|
|Released In:||DM-19 Spectacle Nova|
|Civilization(s):||Light / Water|
Some Great Mecha Kings introduced from DMR-06 Episode 2: Victory Rush onwards are named from buttons on the keyboard. For example, Powerful Num Lock, SL Mecha is named from the Num Lock button on the keyboard and Delete Tank, Destruction Machine is named from the Delete button on the keyboard.
They are based on mechanical and robotic beings, with transportation themes such as trains and firefighters.
This race is introduced as part of the cycle of races during the Phoenix Saga.
- Great Mecha King with Machine Hero
- Grand Devil with Deep Marine
- Dreammate with Vehicle Bee
- Tyranno Drake with Brave Spirit
- Arc Seraphim with Saint Head
Some Great Mecha Kings have effects that go work together with Machine Hero.
The Great Mecha Kings were the first hybrid race to start their conquest onto other hybrid races in order to get the resources to defeat the Phoenixes. At first they tried to invade the Dreammates, but the Dreammates were too powerful for them despite their seemingly harmless appearances so they decided to invade the Tyranno Drakes instead and defeated them. They were later defeated by a Grand Devil and Tyranno Drake alliance.
In Revolution, they appear as Invaders along with Magic Commands. Unlike previous blocks, Great Mecha Kings in Revolution are only consisted of the Water Civilization, a situation shared by Dreammates in Episode 2 which were all consisted of the Nature civilization. They are based on Gachapon machines and later on, they are often paired with Magic Commands.
|Support Card:||Card Effect:|
|Captain Gyro||When one of your Great Mecha King win a battle, you may tap this creature. If you do, untap that Great Mecha King.|
|Captain Million-Parts||Each Great Mecha King and Machine Hero in the battle zone has "blocker." .|
|Captain Super-Rescue||Saver: Great Mecha King|
|Fuuma Neuro Marvas||All your Great Mecha King in the battle zone get +1000 power.|
|Greatmarch Energy||Reveal double the amount of tapped Great Mecha King cards from your deck when you cast this spell. From among them, put all Great Mecha King to your hand, and put the rest on the bottom of your deck in any order.|
|Kourin—At the end of your turn, if this creature is tapped, search your deck. You may put one of your Mecha Del Sol or Great Mecha King that costs 7 or less from among it into the battle zone. Then shuffle your deck.|
|Rescue Space, Emergency Mecha||You may have your Great Mecha King cost up to 2 less to summon. However, they can't cost less than 1.|
Creatures that evolve from Great Mecha Kings:
|Evolution Creature:||Evolves From:|
|Asteroid Raiser, Ice Comet||2x Great Mecha King, Machine Hero, and/or Poseidia Dragon.|
|Excavator MS, Fused Giant Soldier||1x Great Mecha King|
|Invincible Giant Mecha Spartan J||1x Great Mecha King|
|Invincible Mecha Grandiver X||1x Great Mecha King|
|Invincible Mecha Gomach V||1x Great Mecha King|
|Omegablack Z, Invincible Giant||1x Great Mecha King|
|Paladin S, Invincible Warrior||1x Great Mecha King|
|Supernova Mercury Gigablizzard||3x Great Mecha King|
|Supernova Venus la Saint Mother||3x Guardian, Great Mecha King, and/or Arc Seraphim.|
|Supernova Bigbang Anastathis||3x Arc Seraphim, Dreammate, and/or Great Mecha King.|
|Supernova Betelgeuse Final Cannon||3x Great Mecha King, Grand Devil, and/or Poseidia Dragon.|
|Truemechaking Thunderbird Re:||1x Great Mecha King|
|Wheel Warrior W, Invincible Warrior||1x Great Mecha King|