Shadow Stalker and Dark Thorn

The Shadow Stalker is a boss from Kingdom Hearts 2.

Bearing an extremely close resemblance to Darkballs, a fellow type of pure Heartless that failed to appear in Kingdom Hearts 2, the Shadow Stalker was the first boss of Beast's Castle. Called upon by Xaldin to capture Belle as a last effort to turn Beast into a Heartless, the insane, chandelier-like creature attacked Sora and his friends by possessing the windows, pillars, and chandelier of the castle ballroom. Upon being defeated, it transformed into the fearsome Dark Thorn.