Princess Luna

Princess Luna, formerly Night Mare Moon or Nightmare Moon, is a Pegasus unicorn, the younger sister of Princess Celestia
One of my favorite ponies.

So cute she is and really good looking.

Pipsqueak: Um... Princess Luna. I know there's not gonna be any more Nightmare Night, but do you suppose maybe you could come back next year and scare us again anyway?

Princess Luna: Child. Art thou saying that thou... likest me to scare you?

Pipsqueak: It's really fun! Scary, but fun.

Princess Luna: It... is? Pipsqueak: Yeah! Nightmare Night is my favorite night of the year.

Princess Luna: Well then. We shall have to bring [booming voice] Nightmare Night back!

Pipsqueak: Whoa! You're my favorite princess ever! She said yes, guys!

Children: YAY!

Twilight Sparkle: See? They really do like you, princess.

Princess Luna: Can it be true? [booming voice] Oh, most wonderful of...! [normal voice] I mean... Oh, most wonderful of nights.