The Atlantian royal guard

The Atlantian Royal Guard are pretty much what their title says they are. They are primarily composed of human Atlantians and sea creature Atlantians. It's their job to protect the royals from any threats to the kingdom. In the Spongebob series, they reprise their role, only for their big moment in the cavern battle of Atlantis to be relocated to the Great Mouse Detective due to Scroopfan's tendency for twist endings.