i think Jack-8's new costume is maybe referencing GunJack? : r/Tekken
Tekken 3 - Gun Jack by Haukztein on DeviantArt
Tekken 3: GunJack - YouTube
What your choice of Tekken 3 character says about you | JOE.co.uk
Raj Chevli on Twitter: "In fairness, my #tekken based jack/gun jack #celebration/#gesture didn't become popular until Usain #Bolt started it https://t.co/kclJSzBmQy" / Twitter