You can always ridicule someone, even if they're absolutely a fool.

[ Gilgamesh did it all the time in the same breath even. ]

...Even if some of us dislike each other or if we've still held massive disagreements or mistakes against one another, we'll simply need to all get it together so that we could do something successful about this together.

At this point we've all no choice but to be productive, no matter who is there. If I've to remind people of this, I'll have no issue in doing so.