My prediction for 5Ds World :
Starting Characters :
Yusei - Stardust Dragon
Jack - Red Dragon Archfiend
Crow - Blackwinged Dragon
Akiza - Black Rose Dragon
Leo - Life Stream Dragon
Luna - Ancient Fairy Dragon
Event Exclusive Characters :
Harald - Odin, Father of Aesir
Kalin - Infernity Doom Dragon
Rex Godwin - Wiraqocha Rasca
Aporia - Meklord Emperor Wisel
Antinomy - T.G. Blade Blaster
Paradox - Malefic BEWD
Z-One - Metaion The Timelord
I doubt. probably yusei, jack, crow and akiza would be the first characters, the others event. and rua would use power tool dragon not life stream, is obviously they wont introduce it yet. rex goodwin, i see earthbound pretty op in this so probably dragon inti fits more for the game.
Here is my prediction what the signature cards should be for the following characters:
Aporia - Meklord Astro Mekanikle or Meklord Astro Dragon Asterisk
Antinomy - T.G. Halberd Cannon
Paradox - Malefic Paradox Dragon or Malefic Truth Dragon
Z-One - Sephylon, the Ultimate Timelord
CA is a mistake, i don't want them repeat it by releasing Mekanikle and Sephylon. for Asterisk and Halberd Cannon, both clearly unplayable in this format