I don't know, that's just the animation he did when I won. I didn't have to do anything different to get them. (I was able to play as Goku by using a code. When you see his fists flying towards the palace in the beginning, press Up, X, Down, B, L, Y, R, B. Got to VS and you can select Goku and Brolly)
Those very dark palettes at the bottom are actually his Under Water palettes. One of the stages starts the fighters of hovering above water, and when you hit X to fly, instead of going into the air you go under the water. I'm sure everyone has a palette for that.
Those very dark palettes at the bottom are actually his Under Water palettes. One of the stages starts the fighters of hovering above water, and when you hit X to fly, instead of going into the air you go under the water. I'm sure everyone has a palette for that.