Howleen Wolf was trademarked on October 23, 2007, which was eventually abandoned and the name re-trademarked on December 19, 2011. Her first doll came out in Early March, 2012. As of January 01, 2015, her doll number totals 6 and makes up 1.76% of the entire Monster High doll collection. Other merchandise of her is currently limited to costumes .