Now that I'm done weeping at the lack of knowledge of what are generally well regarded fantasy novels....
1) Raistlin was the "mage" of the party during the Dragonlance Chronicles and definitely not a "stock" character. His inner darkness led him down a very dark path in Dragonlance Legends. http://en.wikipedia.org/wiki/Raistlin_Majere
2) Drizzt started as a supporting character in the Icewind Dale books before becoming the well known Drow ranger that he is nowadays.
Two different gaming worlds (Krynn and Forgotten Realms) and 4 years (1984 and 1988) separate the two.