Natsumi Kawahama
Cyrus Lurch
Recently a new addition - Mr. Fluff - showed a bug by dropping rings well outside available CLs. He has since been disabled and the rings will eventually be nerfed back to 10.0, but for now it allows the few with the bug to show a higher than 10.0 CL.
I've seen two so far. One had a thread about it too. I wasn't able to ask if the ring hit harder or was it truly nerfed.
I had an 18.1 Fire Rain ring and I had the feeling that it really hit harder. Meanwhile it has been nerfed back to CL 8. Personally I don't miss being a CL 11.7, since it was worse than being a CL 10. You can't do anything useful. SS is capped to CL 10 and won't let you in, the Hive kicked me out after leaving the platform. The only thing wearing the ring was good for was for the lulz when people were going "A CL 11.7, WTF!?!!???"