Robo

The Robos are a family of four Monster Cards that were released in Legacy of Darkness.

Play Style
The group consists of four monsters, two normal, two fusion. When this group was released, it was perhaps the most versatile of the fusion monsters available, as combining Roboyarou and Robolady could give the players a choice of either Super Roboyarou or Super Robolady, respectively, opening up an easier method of fusion summoning. The idea of getting different Fusion Monsters with the same Fusion Material Monsters would later be used by the Elemental Heroes Archetype.

The true strength of this family comes from its fusion monsters; once either of them were on the field, the player could continuously swap between the two of them by sending them back to the Extra Deck every turn. In addition, both fusion monsters gained 1000 ATK whenever they attacked directly, letting them become incredibly powerful in a short amount of turns.

On the flip side, considering the fact that both of the fusion monsters started out with 1200 ATK and 500 DEF, they were weak as far as fusion monsters go, hindering their playability.

Monsters

 * Synchro Fusionist - Grants players the option to use synchro monsters more effectively in the deck, as using it for a Synchro Summon also lets the player grab a Fusion or Polymerization card from the deck, making fusion all the faster.

Spells

 * Heart of Clear Water - A great equip spell card for the entire family, as even the fusion monsters start out with only 1200 ATK each, this card helps to ensure their survival until they can increase their strength.
 * Fusion Gate - A field spell that lets players use the Robo fusion monsters quickly and efficiently.
 * Fusion Sage
 * Fusion Recovery
 * Messenger of Peace - Helps keep the low-ATK Robo monsters alive and, if you get Super Roboyarou and Super Robolady to 2200 ATK, you can always get rid of Messenger of peace.
 * Super Polymerization
 * De-Fusion

Traps

 * Paradox Fusion - Adds a bit of negation to the deck and helps to ensure the survival of your fusion monsters.