Oni Lee

A second later, he exploded into an opaque cloud of white ash, ten feet across.

> > [...]

> > Anyone else would be dead by now, but the fact that the body had exploded into dust meant it was just a clone, a leftover remaining behind after Oni Lee had teleported away.  He probably wasn’t remaining in one place for more than a second.  My bet was that he was appearing, immediately looking for a new target or vantage point, then making a quick exit, leaving the clone to do the deed.

> Hive 5.7