Tumma Karu/Tumma.K (formerly known as DJ Wulf) is a producer of Hardstyle and Hardtrance music in the furry/raver community. He has been DJing electronic dance music since age 15 and has been producing it since age 17. In 2010, he was discovered by SkunkTiger Records witch lead to the release of the "Blacklight Life EP". The album sold out in 1 day at Anthrocon 2010. The album "It's a Secret" was immediately in production and released under Skunktiger Records the following Anthrocon.
In 2013 he was discovered by Alpha Detox and was recruited for The Hardland Collective as well as being an artist with Hardland Records. He does occasional mixes for Hardland's radio show and holds the performances for the 1st and 10th episode anniversary.
As a stage man, he has performed all across the U.S. solo and with others such as DJ Anarchol, Genki, Krowboi, Veyote, Gh057, Brand Z, and Slap Happy.