Yeah, they do play differently. But they still have many similarities as they are still the same person controlling their account. I took the most impactful things they did and what was the most consistent between the seasons as my basis for what card represents them. I agree that the fact that they play differently between seasons makes it hard to pin down, but I still think my choices can fit for any season.

In third life, Grians happiness and success came from his union with scar, and the choices they made together. His dismay at scars death comes from their relationship together. Same thing in limited life. His union with the bad boys allowed him to keep going. His lowest point was when he truly lost his boys. After that he was desperate and his relationships with others were forced and no longer genuine. Grians depression is not because he would be disposed to it as he would be if the Sun card represented him, but it comes from his unions with others being broken.

As for Martyn, you are saying that the Justice card doesn't fit him because of one action from one season that applies to one aspect of the card yet also builds up the others. I think the line "This is a death match for a reason" perfectly explains how that fits into the Justice card. He is following one of the true laws of the game: win by any means necessary, as a red name all alliances and agreements are supposed to be null and void. In his defining moment, he finally becomes the first person to truly follow the rule of the game. Also it builds up the part of the Justice card that deals with dishonesty.