The Droids You Are Looking For
A Self-modifying OK unit.
OK units were hospitality droids. OK-23 was a chef aboard a cruise liner.
Some drunken guests demanded something they couldn’t eat anywhere else.
By the time the drugs wore off and they realised they were eating their own limbs OK-23 had left on an escape shuttle.
In the years since 23 has self-modified greatly from parts of other droids creating a body to match the mind.