Heroes of Ampsburgh
The world-setting and the in-context characters of castle (cassiopeia "cassie" tower), fury (nula sindali), miss switch (tamara keefe), doctor qilin, big girl (donna aryu) and others in addition to the settings/creations of ampsburgh and other unique elements
Intervention
The same kind that had given her little tryst with cassiopeia away before and brought tristana down upon them. though katarina was hardly hidden at the moment, and kayle was already on the lookout... what was morgana planning to do with it?
Alliance of Conspiracy
Those that went to earth, not being restricted to a moon or to a planet in the achird cassiopeia systems, spread out and didn't pair off as quick as those on the capellan moons. overpopulation was not a threat there.
Northbound
"it's called cassiopeia."