Continuity mistake: In the very beginning, when Ralph is explaining to the bad guys how Fix-it-Felix Jr. works, and how he would rather be a good guy, it shows Ralph and Felix playing their game. When Ralph comes out and starts wrecking things, he puts a hole in the window to the right of the door. When Felix begins to fix things, the window now has two holes.
Continuity mistake: When Ralph and Vanellope are playing the minigame, Ralph gets up on the ramp and starts sorting the ingredients and trash. In one shot, there is a plunger headed towards the ingredients' bowl. In the next shot, the plunger is gone.
Continuity mistake: When Ralph makes the track inside Vanellope's hideout, the road is completely plain, with no obstacles. Later on in the scene, Ralph is guiding Vanellope around some sort of obstacles, which is a big group of spikes coming out of the ground. When Vanellope begins to drive on her own, the obstacles are gone.
Answer: It wasn't that he was screaming out of fear of Ralph exactly, but more surprise to see Ralph of all people, as well as sudden fear of Ralph wrecking the party.
Quantom X ★