It's interesting that two of the animators most closely identified with Mickey, Les Clark and Fred Moore, have so little to do in this cartoon. I have to assume that they were busy on other films. It's likely that Moore was working on the version of Pinocchio that was scrapped.
As in Mr. Duck Steps Out and The Little Whirlwind, Clark gets the entrance of the main character. I'm sure that he earned those opportunities through the quality of his work. The scene of Mickey swatting the flies contains some lovely, subtle distortions of Mickey's head and hands when he first goes after the bugs.
Moore has a couple of scenes and scene 45 is the best, with some nice acting. Mickey has to put on a brave face for Minnie, but his real feelings come out as soon as he turns away from her. It's interesting to see how Moore's Mickey is shorter and squatter than Frank Thomas's.
Ollie Johnston gets the montage sequence after Mickey swats the flies. It's more action than acting, but it's vigorously animated and the drawings are solidly proportioned even when the characters are moving in perspective. Ollie also gets a couple of Mickey scenes. 73A looks like it was added as an afterthought to focus the audience on Mickey pulling out his needle. There's a continuity error on the width of the thread between this scene and the Roy Williams scenes that bookend it.
Riley Thomson's king has a wonderful fleshiness to his jowls and great follow through on his robes. While Frank Thomas takes over the king once Mickey arrives, I think that I like Riley Thomson's version better. It has a greater presence. Thomson also gets some scenes of Mickey; there's good acting in scene 48 and a great scramble exit in 49A.
Don Patterson seems to get the short end of the stick in this cartoon, getting stuck with crowd scenes and long shots. He went on to do great animation at MGM, but it looks like the Disney studio didn't trust him with big scenes at this point.
Roy Williams does the scenes of Mickey inside the giant's mouth. That's imagery worthy of the Fleischer cartoons of the early '30's and it's helped along by excellent effects animation by Cornett Wood.
This is the last Disney cartoon directed by Burt Gillet to be released. I want to talk about him in a future entry.