Real Extreme Diffusion (リアル・エクストリーム・ディフュージョン, Riaru Ekusutorīmu Difyūjon), more commonly abbreviated as R・E・D, were a professional wrestling stable primarily appearing in the Japanese promotion Dragon Gate.

The group was formed on September 24, 2018 by former Antias members Ben-K, Yasushi Kanda, Takashi Yoshida, Big R Shimizu, Eita and freelancer Kazma Sakamoto.

The night of the stable's debut would bring mixed success, as they defeated Natural Vibes in an All Out War ten-man tag team elimination match, but Eita lost the Open the Brave Gate Championship to Dragon Kid.

[2][8][9] 9 days later, Pac returned to Dragon Gate for the first time since 2012 and aligned himself with the group, teaming with Eita to defeat former Antias and VerserK leader Shingo Takagi and BxB Hulk in Korakuen Hall.

[4] On December 4, Pac defeated Masato Yoshino to win the Open the Dream Gate Championship, becoming the first British wrestler to hold the title in the process.