It is not a sock puppet, but rather an automated or semi-automated account for making repetitive edits that would be extremely tedious to do manually. Most bots must be approved at WN:BOT; global bots are accepted in limited circumstances. (Check to see if this user is a global bot)
Administrators: if this bot is malfunctioning or causing harm, please block it.
Blocks should last for 24 hours, and the bot operator should be contacted.