Seagate is one of five kingdoms in the Knight Squad Universe. It is Arc's homeland under control of Ryker.
- Arc (formerly)
- Xander (formerly)
- Arc's Mother (formerly)
- Arc's Grandmother
- Seagate is a parody of Seaside
- It is the first kingdom other than Astoria to be mentioned by name, followed by Inwood
- There is a holiday known as Pretend Wednesday is Thursday Day in Seagate.
- In the 2nd part of End of the Knight, Ryker reveals everyone in Seagate is a thief not just Arcs family as he stated that the kingdom is home to "rats and thieves".