Time Bandits (1981)

Revealing mistake: When Wally is firing the laser at random from the small spaceship, we see Fidget running down some stone stairs, and there are violent laser impacts directly behind him that could only have hit where they did if they had passed right though his body. (01:41:55)

Randall: People who are always right make me sick.
Fidgit: That's why you get along with yourself so well.

Trivia: Throughout the film there are several references to a character named Horseflesh, (such as "Horseflesh would never get us into this mess"). Despite the character being credited at the end of the movie he's never properly shown onscreen. There's a paragraph devoted to him in the published "Time Bandits" screenplay: "The trouble is quite frankly that if Horseflesh had been in it he would have made seven dwarves, and we'd have libel suits from Disney and all sorts of things. But we liked the name, so he remains the mystery dwarf." According to the interview with Michael Palin and Terry Gilliam on the extras DVD (produced in 2002), Terry Gilliam states that Horseflesh is the dwarf seen with Evil, though it isn't mentioned who he is; in the original script he had quite a few lines, but they were cut, eg "The map! Evil one, the very map I promised you, is yours" (from script excerpt shown on DVD).

Question: On disc 2 of the special edition DVD, there were interviews with actors Brad Pitt, Amanda Plummer, Mercedes Ruehl and Madeleine Stowe. Were they in this movie and if so what parts did they play? Also, who played the Supreme Being in physical form?