Streets of Rage 4 'Mr. X Nightmare' appears on SteamDB teasing possible DLC

Dotemu previously teased that Streets of Rage 4 DLC is coming, and whatever it is may feature the franchise

Dotemu Working to Resolve Streets of Rage 4 – Mr. X Nightmare DLC Nintendo Switch Purchase Issue - Niche Gamer

Streets of Rage 4: Mr. X Nightmare DLC Appears on SteamDB : r/GamingLeaksAndRumours

Streets of Rage 4 - Mr. X Nightmare DLC shows up on SteamDB

Streets of Rage 4 Price history · SteamDB

Streets of Rage 4 DLC - Mr. X Nightmare - Dotemu

OT, - Games trailers, news and such, Trailers in the Sky

Streets of Rage 4 » SEGAbits - #1 Source for SEGA News

Sega - games, consoles, reviews and more - page 7

Streets Of Rage 4 - Mr. X Nightmare on Steam