Destruction King is one of the evolution options after an Apostle Lord (that Rou combines with another evolution option in the light novel) reaches max level and fulfills the right conditions.

Mobile Game

The conditions to evolve are to collect 5 ‘Secret Keys of Destructive Devil King’ available only in The Tower game mode (similar to Challenger's Cave) where players can organize up to 9 units in a formation to challenge waves of enemies. Secret Keys are available to be purchased in the tower store with points earned. Secret Keys can also be obtained via chest drops after reaching Iron rank, starting with a low drop rate rising after earning higher ranks. By accumulating certain points you can raise your rank (Spending points does not lower your rank).



HobgoblinKobold Footman
DodomekiDhampirDragonewtGhoulHalf-LordKobold SamuraiNinja KoboldOgre
Half Blood LordHalf Earth LordHalf Saint LordHalf Spell Lord
DullahanLordMinotaurTrollVampireVampire Noble
Apostle LordBlood LordEarth LordFire LordGale LordIllusion LordSaint LordSpell Lord
Conquest EmperorDestruction KingGiga MinoteriosVajrayaksa Overlord
ArgiopeDemon SpiderArmored TanukiCarbuncleSlimeThree Horned HorseHorn RabbitNight Viper
Seven Colored BatStamp BoarPoison MantisRhinoceros BeetleMessenger LocustYellow Monkey
Red DeerBicornBoruforuCrystal Crocodile‎Turtle SnakeFomorBalor
Hind BearRed BearOniguma
Black WolfBlack Wolf LeaderOrthrus
Summoned Creature
SkeletonGreater SkeletonBlack SkeletonGhostZombie
Jobs SystemRank Up System