Astrea's skin is pale yellow and she has glittering, golden yellow wings and antennae. Her sparkly, slanted eyes are dark gold, and she has dark lemon-colored hair that reaches her shoulder with a small flare. Her bangs are brushed to the side with thick forelocks framing her face.
Her attire is a glittering yellow outfit with a star on it and a white frilly collar. She has dark gold shoes with a white ring around the top.
Enchanting and full of wit, she is a fast thinker and quite fascinating. She always puts her best foot forward and is very responsible when it comes to her duties. She may take herself a little too seriously, but the other Glimmies always help bring her back around.
- Her korean figure is named Treya.
- Her name might allude to the goddess of stars in Greek myths.