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Shikamaru (Naruto Shippuuden)
Shikamaru is a very skilled ninja with an intellect in IQ of over 200. Asuma noted that this is beyond genius and probably the smartest ninja in the Konoha; Shikamaru also has a knack for being able to remember everything he witnesses in astonishing detail, which enables him to better formulate plans and tactics, as well as being able to analyze and discern the nature of an opponents abilities after seeing it performed only once. His primary supporting move is the Shadow Possession Technique. It can also be said that Shikamaru is very skillful at dodging attacks and he makes use of strategy and planning as opposed to outright battle. It might be noted that in each of his previous battles, Shikamaru makes use of strategy & planning instead of outright battle. Asuma has stated Shikamaru can think ten moves ahead and consider 200 possible moves in a second. But his real talent is always being able to choose the correct one. This enables him to defeat many ninja who according to him, "Cannot use their head."
Zero (Code Geass)
Lelouch's Geass, given to him by C.C., grants him "the power of absolute obedience," allowing him to plant commands within a person's mind upon eye contact which they will obey without question. Commands dictated in this state are written into the minds of anyone who makes eye contact.
Lelouch could initially toggle Geass activation at will, but subsequently loses this control. Even without his Geass, Lelouch is a formidable opponent. He is highly intelligent, possessing a genius-level intellect, and is capable of devising and executing strategies with incredible speed and precision.