Cheerful, charismatic, hyperactive & enthusiastic, often at inappropriate times, but becomes severely serious when the situation calls for it, always on top of things. Strives to have fun wherever he goes, the thought of a mundane existence unnerves him. Alien, but has a British accent. Witty. Travels through space & time in the TARDIS. Excitable. Loves technology, easily fascinated. Dark past. Massive ego, but very selfless. Thinks every life is precious. Eccentric. Likes making jokes. Genius.