Mara is a D&D critter of mine cursed with immortaility on a scale about as useful as Mr. Immortal of GLA's power. She is such a magnet for bad luck than even Death won't come for her. When she lands on death's door, she is quietly taken somewhere else as if she were one of those presents housecats leave you.
Silver dragon / mink hybrid with a little water elemental to her. She's a 4th ed druid, my favorite class, multiclass cleric.