Source:Revenge Of The Sith/Return Of The Jedi/The Force Unleashed/The Last Jedi
Senate Guard:For centuries, the Senate Guards kept the galaxy's legislators from harm while they went about the Republic's business on the capital world of Coruscant. With the decline of the Republic, the blue guards were eventually phased out by Imperial stormtrooper patrols and the red guard in the Emperor's service.
Imperial Royal Guard:Resplendent in crimson robes and armor, the Imperial Royal Guard protected the Emperor. Secrecy shrouded the Guard, with rumors abounding about the sentinels' backgrounds and combat abilities.
Emperor's Shadow Guard (Legends):Each one of these elite guards is specifically chosen by Palpatine for his exceptional loyalty to the Emperor and the Empire, and for his ability to use the Force. Each Shadow Guard carries a pike that can be ignited to use as a lightsaber-like blade.
Elite Praetorian Guard (With Double Blade):As the Supreme Leader of the First Order, Snoke was flanked by crimson-clad guardians, loyal protectors encased in ornate armor ready to defend the Supreme Leader from any threat.