With Code: Audible can I have a model to activate twice in a turn? My initiative order is: ABC On B's activation I play the card, meaning the new activation is CBA. Does A get to go again? In addition, Why does Maximus have Block, 8 Ball have Block and Valkyrie have Ice Wall? Is there any difference or is this flavor?
First, yes. You can have someone go twice as far as I know using the method noted. Second, both Gata and Musashi have a card that gives 1 energy (or something), but have different names.
Obviously, though, Block can only appear in a deck for a team that includes 8-Ball and Ice Wall can only appear in a deck for a team that includes Valkyrie. Include both, and you could potentially have both cards!
Technically max has a Block as well, so either 8ball or Max needs to be on your team to have at least one block.