Rub3n is a pseudo used by Kangaroo Musique. If you look at his edits in the CPCWiki, then it's obvious.
The edits for the IP address: http://www.cpcwiki.eu/index.php?title=Special%3AContributions&tagFilter=&contribs=user&target=Rub3%C3%B1&namespace=&year=&month=-1