Alchemists are known to be eccentric. Whether it's their personality that brought them to potion-making, or an experiment to two that went wrong to leave them this way, one can usually tell when someone is an alchemist. Eccentric doesn't always means overly cheerful, though. Another way to describe alchemists would be "off." Their motives are not known, but they are undoubetly working on their next potion. They know their way around herbs and various liquids and how to combine them to make the potions do what the alchemist wants. These skills can be used both offensively and defensively. You can poison and enemy or heal a sick teammate. Alchemists are very versitile.