Pinkamena's Dragon.

Pinkamena has taken full control and has successfully wiped out every last citizen in Equestria except one, who still trusts and loves her despite knowing it was her responsible for all of the deaths.

After the death of many citizens in Equestria, Pinkamena now intends on leaving, but not before being confronted by the only one she spared outta love in her dark onslaught, Spike! this would be the shipping name: Spikamena. Teen, because I may have put in a little swearing.