Ruby is a very glamorous female gambler. Her beautiful, small eyes give an impression that she is cold, bewitching, and tricky, but in fact she is emotionally and sentimental. Sometimes she cheats on a bet, but has never been found out. She is a descendent of the elf race, who are rare now. She witnessed all the Doom Island Wars.
Elves love nature more than anything else, and regret the industrialized human society.
He is an inventor and a magician. He is a descendent of the great inventors of the Shia family. He is always invention something wacky, and there tends to be explosions in his laboratory. His ideas are too eccentric for people to understand. Her dream is to be an idol.