The Sheeda are the last remaining species on Earth, at the end point of its evolution. Living in the far-distant future, where the Sun has turned red and the Earth is slowly dying, the Sheeda gained the ability to sustain their existence when Aurakles and his society from the distant past sent the Castle Revolving to their time period. Taking over Castle Revolving and tracing the travel back to its origin, they harrowed the society, taking everything of value to sustain themselves and destroying almost the entirety of human accomplishment. They returned to their home time, and from there launched regular attacks on different points in time. Whenever a human society had reached its zenith, the Sheeda returned to harrow them, taking everything of value from that society and leaving just enough behind to allow them to recover and rebuild so that they could be harrowed once more.
The Sheeda were created by Grant Morrison and Ed McGuinness. They made their first appearance in JLA: Classified #1
Major Story Arcs
The Sheeda begin making incursions on present-day Earth to test if it is ready for a harrowing, sending Neh-Buh-Loh and a phalanx of Sheeda spine-riders against the International Ultramarine Corps. A spine-rider takes control of Pulse-8 and Flow and forces the other members to capitulate to Neh-Buh-Loh and Gorilla Grodd. The spine-rider take control of the heroes and force them to act as weapons to prepare the world for the coming harrowing. They are stopped by the arrival of the Justice League of America. Neh-Buh-Loh retreats to the future to inform his queen of the age's readiness.
Seven Soldiers of Victory
The Sheeda seek out teams of seven, to delay the fulfillment of the prophecy that declares that the Sheeda will be defeated by seven soldiers. They destroy the Vigilante's new incarnation of the Seven Soldiers of Victory, and begin preparing for an assault on the current time period. Using a hurricane as cover, the Sheeda attack New York and begin the harrowing. The process is halted by the arrival of various members of the new Seven Soldiers, none of whom actually know each other, and who have been drawn to this point by the machinations of the Seven Unknown Men of Slaughter Swamp. The Sheeda queen is slain, and the time-dreadnought is captured by Klarion the Witch-boy, who pilots it away and ceases the harrowing.
Powers and Abilities
The Sheeda are the endpoint of evolution. Steeped in magic, they are capable of performing various magical feats. They appear to possess shape-shifting abilities, and may be able to change their size, or else come in a variety of sizes. Very small Sheeda, referred to as spine-riders, can take control of humans by attaching themselves to their spinal cords. Sheeda are universally fierce warriors.
Weapons and Equipment
The Sheeda possess massive amounts of stolen technology, including the time-travelling Castle Revolving, Green Lantern power batteries, and Erdal Gates. The possess a variety of weaponry from all ages, from swords and spears to laser guns.