Not sure how to proceed with that. One of the regular cast members (trying to avoid spoilers here) portrayed a character that died. But at some point in season 2, another character was introduced, portrayed by the same cast member. Both characters appeared simultaneously in 4 of 12 episodes, then the "old" character died and in the remaining 3 episodes only a "new" character appeared (appearing in 7/12 episodes in total). So the question is, how to properly credit them? Disregard how and when they appear, and just credit them as "Old Character / New Character" for the entire season 2? In that case the introduction of the new character might be considered a spoiler. Credit only the "old" character? Add a "new" character as a guest role? Please advise.