He said he would be back. Arnold Schwarzenegger makes his fighting game debut as the T-800 series Terminator in Mortal Kombat 11 a week from now, but NetherRealm Studios has released a short character trailer highlighting the robo-guardian's moveset and one of his Fatalities. They are exactly what you're hoping they'll be.
In a fitting fight against Jax-a cybernetic combatant versus a reprogrammed Skynet cyborg-Arnold shows off some moves reminiscent of old Terminator moments. He enters the fray with his pump shotgun, pulling it from a box just like in T2: Judgment Day, only this time it's a Johnny Cage action figure set that he crushes as he strides into the arena.
The Terminator wields the shotgun, as well as an assault rifle, some futuristic explosives, and a time warp that lets him get from one side of the screen to the other. His Fatal Blow sees Arnold doing his thumbs-up before absolutely demolishing the opponent, and the first of presumably two Fatalities for the Terminator might be one of my favorite in Mortal Kombat history: warping the enemy fighter (or at least, most of them) forward in time to get killed by Skynet robots.
Does this mean that Skynet takes over in the Mortal Kombat canon? Considering the ending of the Mortal Kombat 11's story mode and the general time-bending nature of the last few Mortal Kombat games, anything is possible; maybe while everyone was busy dealing with the various Realms and all their grudges, the military decided it needed Skynet to deal with the constant barrage of otherworldly invasions.
The Terminator does look incredibly cool in MK11's engine though, and despite my general dislike for guest fighters, this one is pretty cool. He can resurrect as the endoskeleton! His bones are metal when he gets hit with an X-Ray attack! Oh, and he says "get over here" in a great Arnold impersonation (while that is Arnold's likeness, it seems like it's a different voice behind the bot).
You'll be able to check out The Terminator on October 8, when he hits Mortal Kombat 11 as part of the Kombat Pack rollout. NetherRealm's fighter will also be getting three-person mini-raids soon too, which should add even more things to do beyond MK11's story and versus modes. Considering Mortal Kombat is still 2019's reigning champ via NPD, it's no surprise NetherRealm Studios wants to keep building up its content base.