Every three star character has one. We track them in the wiki, making a special page for it every season one of them comes up. Why? the event itself is the same, the only changes are (a) the rewards and (b) the comic pack break downs.
I propose that we change the season-specific spotlight events to only contain that rewards/packs information. Use a tab bar in the main event (like the Daily Reward page) to show the different times it's appeared.