Pom Pom and The King of Town's Relationship

"I keep telling him the sun don't rise and set on that pile of whatsit, but he don't want to listen!"

Despite Pom Pom's popularity and The King of Town's lack thereof, the two of them get along well.

Pom Pom and the King of Town Getting Along

The King of Town DVD — Pom Pom and Homestar Runner help the King find his sheep.
Strong Bad Is In Jail Cartoon — Pom Pom and Homestar help the King find The Poopsmith.
Homestar Presents: Presents — Pom Pom attends a buffet held by the King.
Bug in Mouth Disease — Pom Pom and the King hold a conversation presumably about the Poopsmith and the pile of whatsit, and are interrupted by Homestar.
Email boring (really) — Pom Pom is one of the guests at the King's party.
Dangeresque 3: The Criminal Projective — Pom Pom and the King co-star as Professor Experimento and Perducci respectively, with one off-screen moment consisting of Perducci stealing Experimento's disk of launch codes.
I Killed Pom Pom — The King appears to be shocked when Homestar kills Pom Pom.
The Homestar Runner Enters The Spooky Woods — Pom Pom goes to "A party at a rich kid's house" and he is seen at the King's castle with The Poopsmith implying the King is the "rich kid".

Halloween Awards Show — Pom Pom "laughs" at the King for receiving the least votes in The House That Gave Sucky Treats.
Email pet show — Pom Pom and the King are competitors in the Cat Mess Inbredtational Pet Show.
Strong Badia the Free — In addition to joining Strong Bad's revolution against the King, Pom Pom gives Strong Bad a suggestion on how to kill the King.
Haunted Photo Booth — The King criticises Pom Pom's costume, and even goes as far as to say he would have Pom Pom juiced.