Leo
From Tardis Wiki, the free Doctor Who reference
Leo was a constellation visible from Earth and a sign of the Zodiac. (TV: Secrets of the Stars)
In 2009, the "Children of Leo" were the third to be brought under the control of the Ancient Lights when Martin Trueman invoked the sign into his circle. Among the Children of Leo was Trinity Wells. Leo followed Cancer and preceded Libra. (TV: Secrets of the Stars)
