Ruby Ramirez

"Ruby Ramirez? Sounds Spanish. Judging by that, she's kinda Hispanic, I think... but still, I like that way she looks, her shirt, her tomboyish look, and she had the ideas of an inventor as well."

--Su Ji-Hoon, The Arrival

Ruby Ramirez is an inventor and the leader of the Preschool Girls. She is from Rusty Rivets.

Also, judging by her leadership, she is the main protagonist of When the Cold Breeze Blows Away.