Babylon 5 introduced a minor character in season 2 at the behest because of the TV network, only to kill them off by the end of the season.
This character was set to have a major role in Babylon 5, but her actress departed the show in season 2 and changed the trajectory of the arc.
It can be a dangerous place, but it's our last best hope for peace. This is the story of the last of the Babylon stations. The year is 2258. The name of the place is Babylon 5.