The best replacement for dobby is gollum.

The best alternatives to dobby are rated as following:
★★★★★  gollum
★★★  smeagol
★★★  jacquard
★★★  putin
★  lucius malfoy
  doby
  dobey
  dobby
  dobbie
  lucius

Your alternative for dobby is not listed? Suggest!
Speaking about dobby, one probably shouldn't forget about harry potter.

Other search terms related to dobby and their ratings are:
★★★★★ harry potter
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Google Trends

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dobby
gollum
smeagol