@RedAndCosmoteer
It wouldn't be the first time Titan had an unexpected intruder. This one however would have not so good intentions as the previous, and would enter the planet without getting noticed...
"Arrg, my back. I shouldn't have overloaded that FTL with those souls..."
A hooded man with a black staff stands up in the middle of the oldest tomb of the entire Ecumenopolis.
"Well, what are the odds? No living soul to be noticed nearby and plenty of restless dead. What more can a necromancer wish for?"
He walks over to one of the older graves and puts his hand on the metal coffin. The wizard started whispering.
"Oryā́, if you please. Rise my champion and together we will conquer the world."
A green light seemed to shine from the coffin while it slowly opened. A skeleton crawled out, and he looked rather fragile.
"You will become my sword and my champion, you will become my dark knight. Kneel before your master and embrace your destiny."
The skeleton kneeled. His bones became thicker and darker like a black armor. His skull became like a horned helmet and his ribcase a mighty layer of armor. The skeleton stood back up and rose to a full 3.5 meters tall.
The knight opens his hands and an enormous broadsword, almost two metres long, appears in them.
"Good, but with one knight I cannot seize control of this silly planet. I need an army."
The necromancer holds his hand on the ground, a greenish light spreads across the graveyard.
"Oryā́!!!"
A minor earthquake could be felt several kilometres around the tomb while the dead emerged. Soon all were granted bows, swords and shields, the perfect backbone of an undead legion.
"Now, my legion. I have awakened you to purify this galaxy from the filth that rules it. But we must start small to grow big. First we take a city, then we conquer all! March forward for a glorious victory!"
The army marches forth in perfectly synchronized rythm. Thousands of feet sound like thunder and the nearby citizens have no clue what evil is coming their way...