The angel Ruiesu from the Celestial Clan (Bunny Black 3) will be a real help from the begging of the game where attack Units are scarce and she can increase her Exp Points faster than others which is useful to apply different techniques to your liking. Placing the mouse on her over the lobby is really fun listening to her with a complaining yet Sexy tone: Ruiesu: "Maou-sama ga pantsu wo totta!".