If you want for questing, Fire mage comes in handy especially if you don't have fred or niss to 1 shot multiple enemies or at least damaging multiple targets. A wind knight is also good since they are more likely to move 1st and cast the anti seal to your team.
But as Vampire stated above, an ideal quest team needs a water, fires for killing and earth for tank. Fire knights are usually for pk... could be wrong but that's my input.
Links to important stuff:
Transport Quests: http://wlodb.com/topics/99
WLO Pets: http://wlodb.com/topics/13670
WLO Emoticons: http://wlodb.com/topics/6195
PSN :)
TAURUS SERVER (NOT UPDATED - NO LONGER PLAY)
DRAGON CAVE - Click or see them if u will lol ^^