The best replacement for pennywise is pinhead.

The best alternatives to pennywise are rated as following:
★★★★★  pinhead
★★★★  killjoy
★★  randall flagg
★  beetlejuice
★  ronald mcdonald
★  leprechaun
★  freddy krueger
  sweet tooth
  krueger
  crimson king
  nofx

Your alternative for pennywise is not listed? Suggest!
Speaking about pennywise, one probably shouldn't forget about zoli.

Other search terms related to pennywise and their ratings are:
★★★★★ zoli
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Google Trends

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pennywise
pinhead
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