Cannot remove ® from the name of an app
When the app name is the same as the CFBundleName, the CFBundleDisplayName is used.

Therefore it would seem the CFBundleName is ‘Rayman Origins’, and when the app has this name, the CFBundleDisplayName is used, which appears to have a ® in it.

To remove the ®, open the package contents (right-click on the app from Finder and choose Show Package Contents), then navigate to Contents/Resources and open InfoPlist.strings with Xcode and change the CFBundleDisplayName to your desired name.

Background: This is meant for localisation but also allows for fancy things like naming the macOS ‘Wi-Fi’ instead of WiFiAgent.