If these are spoilers you are about 30 years behind.
Q
Two that I can remember: Q got temporarily kicked out of the continuum (reference d above), also when Q got banished in the asteroid and Janeway let him out, he became human, then committed suicide.
Walnut Creek and infomagic saved me so much headache. Can’t beat the bandwidth of a FedEx truck, especially when you’re 28.8 at home.