Iznogoud.

Iznogoud is the Grand Vizier a.k.a. second in command Sultan of Baghdad Haroun El Plassid (a pun on the historical Caliph, Harun al-Rashid) and his sole aim in life is to overthrow the Sultan and take his place. Iznogoud is always assisted in his plans by his faithful henchman, Wa'at Alahf. But he's ultimately unsuccessful, and his plans always fall apart in a hilarious way, usually backfireing at him, while the Sultan goes unharmed.