Chloe Sullivan was never in Superman's chronicled adventures. The actress Allison Mack was only supposed to be on for one season. But that changed. Chloe Sullivan never appeared in any of the comics or the movies. As for Jimmy, he’s been in it since the beginning. Chloe was meant to die in the season 8 finale, not Jimmy. The question, I and many ask, is why didn’t Chloe use her powers to save him like she did with Lois? Chloe was meant to die in the season finale saving Jimmy. However, someone had the bright idea to have her live.
Many say they rather have Chloe live. I understand why people would want that, but they don’t look at the big picture. They are only looking at two sides of the pyramid the past and the present. They are not looking the third side that shows what's going to happen or what they already know is supposed to happen. It may be that they're unsure if Jimmy is alive in the future. I think Chloe will be taken out of the story one of two ways: I don’t think there will be a Chloe when Clark suits up in the red, blue, and yellow. There will be a funeral for Chloe one day or she will be taken out of history completely from Smallville by a villain or by a hero in some situation. That is certain if Jimmy does not come back before the end of the final season, Superman fans will be outraged for its not being true to "Superman."