Keros was born to one of the noble houses of a vast undersea kingdom, a lineage entrusted with guarding the outer reaches of their domain—where the light fades and danger rises from the abyss. From an early age, he was taught that nobility was not privilege, but duty: to stand watch where others could not, and to act where others would hesitate.

That belief was tested when a tyrant rose within his homeland—an ambitious warlord who seized power through fear, betrayal, and ruthless force. While others bent the knee or hid behind courtly words, Keros acted. He defied the tyrant openly, protecting small outlying settlements and escorting refugees beyond the tyrant’s reach.

For this, he was marked.

An assassin was sent. Then another. Finally, a decree: Keros was to be hunted until his name was erased from memory. Rather than endanger those he once swore to protect, he exiled himself from the depths, taking his vigil to the surface world.

Now, Keros walks foreign shores beneath an open sky, a silent guardian with no banner and no court. He does not seek to reclaim his title, nor to rally armies.

He watches. He waits. And where the helpless stand in the shadow of power, Keros the Vigilant steps forward—unyielding as the tide, and just as inevitable.