Is the stickman used in games copyrighted?

Apple rejected my game for the reason:



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4. 1 Design: Copycats



Thank you for your response. It would be appropriate to remove all instances of Stickman from your app, marketing description, and screenshots.



We are unable to proceed with the review of your app until this issue has been addressed.

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My game includes some stick characters and name contain "stickman" word. So is stickman copyrighted?

App review would have cited 5.2.1 if they felt the issue was one of copyright infringement. 4.1 refers to copying the general concept of another app to make your app uninteresting as an addition to current apps. Copyright (or in your case perhaps trademark) infringement is different.

Is the stickman used in games copyrighted?
 
 
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