- "Guards. Leave us."
"Um... you're sure? I mean, we spent the last ten years training to fight off your enemies..."
- ―Palpatine, ticking off his guards
The Emperor's Royal Guard were the freaky people in red burqas who guarded Emperor Palpatine. You know, under those burqas, they were really hot women. Okay, not really... maybe a few. Stormtroopers hated them because when their laundry was mixed together, it turned their undergarments pink.
The Guard was founded by Cardinal Richelieu, Raistlin Majere, and the Scarlet Pimpernel. They were a savage, well-trained fighting force... but mostly they just followed the Emperor wherever he went and stood around.
Royal Guards hated it when Palpatine said "Leave us" and brought one of his worst archenemies into his room for a monologuing session. They also hated it whenever someone pointed out that their name was an oxymoron: Emperor's Royal Guard. They didn't guard the king and queen; they guarded the Emperor, which means they should've been called the Emperor's Imperial Guard... which would have been redundant. The halls of the Imperial Palace were littered with the bodies of pedants who refused to concede the point.