[1] He is well known for his very brutal deathmatches with the likes of Ryuji Ito and several other BJW wrestlers.

On June 26, 2010, Kobayashi made his American debut in Combat Zone Wrestling's Tournament of Death IX defeating Nick Gage in the first round but lost in the second to JC Bailey.

In mid-2013, Kobayashi was diagnosed with hepatitis C, forcing him to take a long-term break from in-ring action to undergo treatment.

[5] Kobayashi appears as himself alongside Ryuji Ito, Daisuke Sekimoto, Takashi Sasaki and Jaki Numazawa in the 2006 film Dirty Sanchez: The Movie.

Kobayashi and the other wrestlers performed wrestling moves on the three main cast members, and also made a cameo appearance in the 2004 film Otōsan no Backdrop.