Allow me to aware you on these images. These actually aren't fan made images. These are concept/ art from a DBZ game in Japan known as Dragon Ball Heroes, the game exists in arcades and for hand helds like the Nintendo DS. These characters appear in animated trailers/ commercials, also in game, and other merchandise. So in a way they are apart of the dbz universe. There is actually even official manga with these characters in it too. Dragon Ball Heroes hasn't shown any sign of slowing down either. We'll likely see more characters being involved in other sorts of media. Until then these characters are pretty much motifs of the 'player' however some of the characters have been given names and voices.