The Oblex

The Oblex is a Drow creation in Last Mount and one of the primary antagonists of the Last Mount Arc.

A uniquely intelligent mutated ooze with the ability to steal memories and use those memories to create false identities that it can assume at will.

Powers
The Oblex's memory theft was foreshadowed by Malkor, who had major parts of his personality devoured by the Oblex, leaving him permanently mad.

On contact with the Oblex, a victim's memories are immediately drained. The exact memories are selected by the Oblex and immediately erased from the victim's mind. Any creature that has had it's memory drained forgets that they were effected as well.

These memories guide the Oblex, who can act independently as every identity it has stolen. It is unknown how to return the memories to those who lost them. Symania discovered during their first encounter with the creature that, if one of the assumed identities is destroyed, the memories are destroyed with it, making it impossible for them to be restored.

Trivia

 * According to Phoebe, the Oblex is incredibly weak to fire. This was put on display when she incinerated G'aetan's Oblex imposter with Fire Bolt.
 * The Oblex is the most encountered enemy so far; stealing Ara's memories in 1x08, ambushing the party in 1x09, and posing as Grenza in 1x11.