"She took another of my sons."
Strengths: Leadership, Organization, Stoicism
Weaknesses: Tact, Humility, Empathy
After the defeat at Gobwin Knob, King Slately approached some sides, including Haggar, and tried to persuade them to join the second Royal Crown Coalition. He may have approached Jitterati and Carport, but if so, his efforts failed.
Real World References
The name of the faction, Jetstone, seems to be a portmanteau of the names of the Hanna-Barbera cartoons The Jetsons and The Flintstones. King Slately's name is an amalgamation of the names of the bosses on the two shows, Mr. Spacely (Jetsons) and Mr. Slate (Flintstones).