JunJun
JunJun is the most tomboyish member of the Amazoness quartet, and the only one who wears pants. The rest of them have those weird little ruffly skirt-like things. She's the acrobat of the Dead Moon Circus, and she's really good at handsprings and stuff. She's the first one of the Amazoness Quartet to notice that, even though they're more powerful than the Sailor Senshi, they seem to be missing something.
I think JunJun's pretty cool, especially how she helped her target conquer his fear of vaulting. Of course, then she took his dream mirror, but no one's perfect, right?

Mythology
JunJun is named after Juno, the Roman goddess of birth and marriage. How that relates to JunJun, I have no idea. Juno was the wife of Jupiter, king of the gods. Juno corresponds to the Greek goddess Hera, who was queen of the gods.

Colors
JunJun's color is obviously green. I'm not sure if it's significant in any way, but green is also Sailor Jupiter's color. JunJun and Jupiter have a lot in common as far as personality goes (see the Resemblance page).

Asteroid
The asteroid Juno is the fourth largest asteroid, about 430 km in diameter.