(Note: I couldn't find a story about any of the Promethean Knights or other Prometheans, so I decided to make one. I hope it sticks close to the lore, and if not, feel free to give constructive criticism.)

The Promethean Knight Commander, who goes by the code name Warrior, and his four brothers, have been fighting for the Didact since they were created, and were given command of a Crawler that is more dangerous then the usual, given that it's still a prototype. Once they saw their leader defeated, they jumped in after him, but failed to know they were too far away to arrive in the same location the Didact was sent, and have arrived in Equestria. Alone, and forced to fight for a side.