Here's page 4 of Fusion #9. For those who don't remember the incidents being referred to, the space shuttle incident took place during the last 2 pages of Issue #4, and the Mass Master incident took place on pages 11-13 of Issue #7. The incident X-Pletive describes took place last issue.
Oblivion was on Atro City side, and so are the rash of people compelled to commit suicide. It looked like an energy being though, not something that could affect physical objects, so who broke into Heaven's Gate?
Oblivion's appearance in Issue #7 was in Monstro City. Fusion's only been in Atro City in Issue #6 (when she met Dandy-Lion). However, Monstro City and Atro City are simply on opposite sides of a river, giving them the name of the Dual Cities Megalopolis (as mentioned back in Issue #6).
Given that Expletive has said in the past that both his powers run on cursing, and that he hates cursing; why is he still cursing when he's not fighting / healing / etc...?
When in costume, I think he just likes to keep his powers handy--you never know when something bad will happen (and the quiet moments tend to be the calms before the storms), so it's best to be prepared.
Yeah, I think a number of senior heroes (and Riveter in particular) are protective of young heroes. Plus, I think X-Pletive has warmed up to Fusion and gained a good bit of respect for her after their team-ups in Issues 4 and 5.