The Mishima Family Invades Mortal Kombat
Jinpachi, Heihachi, Kazuya and Jin all invade MK to combat its various fighters. They have realized to survive is to make a grudging alliance and utilize their amazing potential to take on and defeat the best MK has to offer.
Some intriguing fights be:
Jin vs. Liu Kang
Heihachi vs. Rayden
Kazuya vs. Goro
Jinpachi vs. Shao Kahn
Heihachi vs. (younger) Sub-Zero
Kazuya & Heihachi vs. Smoke, Sektor and CYrax
Jin & Jinpachi vs. Sheeva and Motaro
I think that, with all their powers, that the group of 4 could beat anyone in MK short of Shinnok and Onaga. Shang Tsung has a very bad track record and so does Quan Chi. Maybe Ermac could beat them given his TK but he'd have to stop all four of them at once.