"Adamancipator", known in Japan as "Adamassiah" (アダマシア Adamashia), is an archetype of Rock monsters which debuted in Deck Build Pack: Secret Slayers. It is a Synchro Archetype comprised of mostly Level 4 monsters of different attributes and two Level 2 EARTH monsters.
This archetype is divided into a few sub-groups. The main third of monsters, simply called "Adamancipator", are explorers of the caves. These tuners include two Level 2 monsters and one Level 4 EARTH monster, whose individual sums of ATK and DEF add up to exactly 2200, that allow the player to excavate the top 5 cards of the Deck and Special Summon a Level 4 or lower Rock from the cards excavated. The second is the Adamancipator Crystal, Level 4 Rock non-tuner monsters of FIRE, WATER, and WIND Attributes with 0 ATK and 2200 DEF that have effects when summoned by Adamancipator cards and effects to recycle Synchros of their attribute to put on the top of the Deck; these monsters are beasts encased in crystal. The final third are the "Adamancipator Risen" monsters, Synchro versions of the Adamancipator Crystals, that have excavate effects with bonus effects and Quick Effects if a monster of their Attribute is in the GY on the opponent's turn; these monsters depict an explorer riding on the beast that was freed from its crystalline prison.
This archetype revolves around Synchro Summoning and excavating the top cards of your Deck to summon Level 4 or lower Rock monsters. This action of cards excavating by the effect of their Tuners reflects their job as gemstone explorers; they 'explore' deep into the 'cave' (player's Deck) to seek for any gemstones they could possibly find (note that the Tuners can Special Summon any Level 4 or lower Rock monsters, not limited to the "Adamancipator Crystal" monsters alone). The Tuners can even be easily Special Summoned from the hand following certain requirements; "Adamancipator Analyzer" may take the first move to Special Summon himself via his "Cyber Dragon"-esque effect, then the player can proceed to further Special Summon the other two "Adamancipator" Tuners, "Seeker" and "Researcher". Before you excavate any cards through their effects, you might want to use the effect of their exclusive Field Spell "Adamancipator Laputite" first, to guarantee that you will later Special Summon any "Adamancipator Crystal" of your choice for the sake of Synchro Summon.
You may also want to halt further Synchro Summoning by keeping some amount of "Adamancipator" monsters on your field during certain situations; for example, by providing enough "Adamancipator" monsters on your field, you can use the Trap "Adamancipator Relief" to destroy cards on any field. The Trap requires you to Tribute any number of "Adamancipator" monsters to destroy that many target cards +1 on the field. The best "Adamancipator" monsters to Tribute are the crystals, since they are useful while in the GY to unlock the second effects of the Synchro Monsters of the same Attribute. Furthermore, in a case where they are resting in the GY along with the Synchro Monsters, they have an effect to recycle themselves and the Synchro Monsters from the GY back into the Deck.