Ultra BRAND (アルトラ・バイオレンス, Arutora baiorensu) or ultra-violence®, was a Japanese clothing brand that specialized in JoJo's Bizarre Adventure-themed apparel and accessories. It was owned by clothing designer Jun Okubo (大久 保潤, Ōkubo Jun) as part of Homedroogs Inc. (有限会社ホームドルーグ, Yūgengaisha Hōmu Dorūgu).
The project started up in 2001 as a collaboration with Lucky Land Communications. The products that were featured on the official website included a wide variety of clothing options like brooches, pendants, scarfs, jackets, belts, t-shirts, pants, and the popular replica of Yoshikage Kira's Tie. In April 2009, a exclusive shirt released for purchase on BEAMS featuring Echoes ACT1-3
As of 2015, the company had presumably been discontinued.