What are 2 similarities and 2 differences between rumpelstiltskin?

Similarities:

1. Both versions of the story involve a magical imp or creature who helps a girl perform an impossible task.
2. In both versions, the imp demands a steep price in exchange for his help.

Differences:

1. Rumpelstiltskin in the Grimm's fairy tale is portrayed as a malevolent creature, while in other versions he is more neutral or mischievous.
2. The endings of the different versions vary, with some being darker and others more forgiving or redemptive.