Clockwork’s ultimate goal is to attain the power of an alicorn, and unlock some form of immortality, though he often ends up wrecking his own chances at reaching these goals, because he makes so many enemies.
Clockwork usually comes across as friendly at first, but some of his ill intent can sometimes bleed through in the form of arrogance and volatility under stress. Many ponies have gone missing near his laboratory, but somehow, none of them can be traced to Clockwork, despite the obvious connection. He is usually under the watch of the Canterlot guard for this reason.