So in le second version of the Dragon Ball Z intro (mostly modified to have Goku as a Super Saiyan), I noted two things that I couldn't identify.
One was some red dude, the other a cybernetic-like hand being formed (see le gallery below). I thought something like "Eh, I'll learn who they are later on in DBZ probably."
Nope. Seen all the episodes, and I don't 100% know who they are. The red dude could be Piccolo/Kami with a red tint, but that's just my speculation. As for the hand, I have no idea. I thought ir could be Mecha Frieza, but the hand has a human skin tone, as opposed to a metallic look like Mecha Frieza's, or white like Frieza's original hand. Does anyone, perhaps, know who/what this is in these two scenes?
Red dude.
Cybernetic-like hand