Shadow Glob

The Shadow Glob is a Pureblood Heartless that is found in Kingdom Hearts and Kingdom Hearts 358/2 Days. It is an immobile, black-violet orb of darkness. While it does appear in Kingdom Hearts, it is unnamed, and is only given a name and journal entry in Kingdom Hearts 358/2 Days.

Kingdom Hearts
After having been defeated once, the Parasite Cage attacks Sora and his friends again, now revealing the Shadow Glob in it's mouth.

After Oogie Boogie is defeated, his darkness, in the form of Shadow Globs, brings him back to life by fusing the villain with his manor as a giant monster. However, Sora, Donald, Goofy, and Jack Skellington manage to put him down for good by destroying the Shadow Globs that were animating him. Unlike in Kingdom Hearts 358/2 Days, they are capable of casting Fire against you when near them.

Design
As simple as they come, Shadow Globs are semi-spherical, tumorous, black blobs with an inner purple glow. When hit, they wobble much like gelatin.