Justice League vs SCP-999-J by ElGuigo on DeviantArt

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Justice League vs. the Fatal Five by BOOSTERGOLDENFAN2001 on DeviantArt

Agent J vs Dr Alto Clef (Men In Black VS SCP Foundation) : r/DeathBattleMatchups

The Empty Hand vs SCP-2747 (DC vs SCP) : r/DeathBattleMatchups

SCP 999 (Commission) by GraphiteTheOwl on DeviantArt

SCP 999 OR SCP 729-J : r/DankMemesFromSite19

ElGuigo User Profile

Explore the Best Scp999 Art

Justice League vs Creepypasta by yugioh1985 on DeviantArt

[Sketch] SCP-999-J by maxalate on DeviantArt

Matchup for 8:SCP Foundation Remake by zalgo9997 on DeviantArt

Agent J vs Dr Alto Clef by ChristopherMcgrath on DeviantArt

5. Justice League International by GOTHAMKNIGHT99 on DeviantArt