Master of magic is what a mage is. Be it to attack, help, heal or pick your nose, you do it with magic.
Dexterous combatant that sticks to shadows and mainly uses daggers. Quick, unsuspected attacks are their specialty.
Battle engineers, also known gadgeteers use technological trinkets that they have made on their own for the battle. Traps, bombs, robots, etc.
Heavily armored and magical champions of good that gain power from their sacred oath.
Expert at close quarters weapon fighting.
