It is a legitimate alternate account, used to make repetitive automated or semi-automated edits that would be extremely tedious to do manually.
Emergency robot shutoff button
Administrators: Use this button if the bot is malfunctioning. (direct link)
You can contact for the owner for requests, questions, and queries by either leaving a message on my polish talk page in Wikipedia (prefered) or emailing them. Please be aware I may deny requests at my discretion without giving any reason. I am also on IRC.