Since the server ends at velious make the sleeper a mob that respawns...?

[Kika Maslyaka]

No. When Sleeper awakens, it will randomly spawn around the world and kill any player or npc it finds. All npcs/mobs killed by the Sleeper will no longer spawn in the game, and any players killed by the Sleeper will be marked as "perma-dead" - you will no longer be able to to log that char in, neither delete it to make a new one.

Once all the npcs and players are permanently killed, the server will turn itself off, and EQ will finally be "completed".
The End.