[Kevin](http://en.memory-alpha.org/wiki/Kevin_Uxbridge) was encountered in [3x03 The Survivors](http://en.memory-alpha.org/wiki/The_Survivors_%28episode%29) and turned out to be quite powerful a being, a [Douwd](http://en.memory-alpha.org/wiki/Douwd). Actually, his powers do remind me of a Q, so is he in some way related to them?