Luscien, a mage, highly intelligent and capable of many great talents; and Gareth, a warrior, indestructible with the strength and resolve of ten soldiers. They seem nothing alike, and yet they are full-blood brothers. Deep down though, perhaps they are rather alike, driven apart by nothing more than the mild differences that have stacked up over time.
(In honesty, they are an exaggeration of myself and my younger brother.)