I don't see the need for anyone to have more than one character. At the same time, I wouldn't mind anyone having more than one. It's not like your character is going to die though.

Solar Legacies, in my head, don't actually share a series like the Numbers do. You can make it whatever sort of monster you like and from whatever archetype.

[sub]I might have a big arc relating to Duel Terminal though[/sub]