PC / Computer - Streets of Rage Remake - Mr. X - The Spriters Resource

Sigma Posting on X: Mr. Σ Source: Mr. X Streets of Rage 2 (Genesis) by Sega, Ancient, MNM Software, Shout! Designworks and H.I.C. / X

Streets of Rage 4 Mr. X Nightmare: Everything you love about old school games

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

Mr. X by CosmoBuggi on DeviantArt

Streets of Rage 4 “Mr. X Nightmare” DLC's Final New Character Revealed – NintendoSoup

Streets of Rage 4 DLC Mr. X Nightmare, free update announced for 2021 - Polygon

Streets of Rage 4 Mr X. Nightmare DLC - Official Trailer - IGN

Mr. X (Resident Evil) vs Mr. X (Streets of Rage) by konojei on DeviantArt

Streets of Rage 2 Mr X Greeting Card for Sale by retrogameprints

Check Out Eight Minutes of Streets of Rage 4: Mr X Nightmare Gameplay – GameSpew