You are the dungeon

Core: Seedbed. Perk: Seeder: Can breed with target regardless of barrenness or contraceptives.

Size: Massive. Perk: Parallel cores: Your massive size causes your monster core to divide in two, letting you take two actions at the same time.

Monster Family: Machine. Perk: Prime Directive: You can turn off your emotions to fulfill your goals. Also, as a machine monster, you gain a strength and defense buff of 300% but lose 50% of all magic power except for Light based spells.

Package Type: Standard Package (Basic tentacles, tentacles with suction cups, tentacles with injectors, tentacles with nubs, toxin aphrodisiac, toxin lactation, toxin breast expansion). Mind break add-on.

Unique Power: Dungeon Master. You get a basic dungeon upon spawn (in this case, an old, abandoned factory), which creates monsters of your type (various drones). Gain a 400% boost to all stats while in the dungeon.

Class: Knight. Defensive melee class.

Cheat: Demon King’s Heart. Gain the potential of a Demon King, gives a 400% increase to monster experience, and an additional monster power.
Second power: Brood sire, can impregnate yourself (as a machine type monster, this basically means you can create minions without outside assistance).