[quote=@Ryik]
I have a deck in mind that uses pendulums, but considering the deck aims for a second turn exodia victory and only attempts to start spamming the board when it can't do that... it might not be best for this RP.[/quote]

Is it igknights or metalfoes? Because those decks are playable without Exodia. I'm not even opposed to alternative win conditions as long as it's not a deck that doesn't include opponent interaction.

[quote]Are we allowed to have multiple decks on the same character? If so, does every deck the character uses have to include their Solar Legacy? I have an extremely bizarre deck in mind separate from the one above.
[/quote]

You can have multiple decks. The Solar Legacy includes itself whether the player wants it there or not.