AlphaMech

The Letter Mechs are a series of LIGHT Machine-Type monsters that are an extension of the VWXYZ series already in the TCG. This extension covers all twenty-six letters of the alphabet, with the monsters catagorized into five groups: "ABCDEF," "GHIJK," "LMNOP," "QRSTU," and "VWXYZ." As was the case with the original series, there are Union Monsters in every group, designed to equip with their comrades. This series utilizes a four-tiered system of Fusion Monsters that goes as follows:

Tier 1: This tier is made of Fusions using 2 or 3 members of one of the five groups above. Examples include VW-Tiger Catapult and XYZ-Dragon Cannon.

Tier 2: This tier is a total combination of all members in one of the five groups above. An example would be VWXYZ-Dragon Catapult Cannon.

Tier 3: This tier combines two Tier 2 Fusions for a Level 10 Fusion Monster. They are Summoned differently than Tier 2 Fusions, as they require one Tier 2 to be on the field and the other to be in your Graveyard. Then you have to banish them both in order to Summon the Tier 3. Only Tier 2 Fusions of alphabetically adjacent groups may be fused. Examples would be the monsters titled "A-to-K" or "G-to-P."

Tier 4: This tier has only one member: the strongest Letter Mech that bears the title "A-to-Z." This card is the hardest to Summon, as it requires you to banish all 5 Tier 3 Fusions from your Graveyard. However, if this card is Summoned, it is almost unstoppable, as it possesses the abilities of all 5 of its Fusion Material Monsters.

Higher Tier Fusions can be difficult to Summon, but new Support Cards allow you to send Fusion Monsters to the Graveyard from your Extra Deck, allowing them to be Summoned with more ease than they normally could.