I was just thinking about something... Say you have two archenemies (one with the Mystics ability). The one who doesn't have the Mystics ability is on their very last click. If the non-Mystic hits the Mystic and KOs it, and the Mystic ability kicks in and KOs the non-Mystic, would each player get the archenemy bonus points for KOing each other? I would think yes, just want to make sure.

Ghost

That sounds reasonable to me....

I would say yes

I would argue that the non-mystic takes no damage, because if the mystic is KO'd he's not around to deal damage anymore. I haven't read the FAQ and charts to the degree to know how it would work out officially, but it only makes sense that a KO'd figure can't hurt someone.
Then again, I think you should be able to outwit team abilities too, so I may be a radical.

I would agree that if both are knocked out each player would get the archenemy points, however.

I'd have to say it would work. The only thing I can think of that is similar is when a FF fig is knocked out, their Team Ability kicks in as they are KO'd.

The mystics ability just kicks in if they're damaged. It doesn't stipulate that the mystic character still has to be alive.

To attempt to explain it in comic terms. My assumption is that the team ability represents magical wards and such that the mystics place around themselves. The wards are already in place and active before the attack that damages them is made. Therefore, there is no need for the character to be around to have the ward do damage. Think of them as mystical land mines.

Good question, though, considering that Circe, a Mystic team member, will be Arch-Enemies with Wonder Woman. Could very well be an issue.

I think that the Mystic ability would kick in at the same time the damage happened. Both players would get the points.