User blog comment:KenshinFoxz/Help Me!!!/@comment-27948655-20141208181847

lucca is really good. he can add water and earth element to your attacks and do lots od damage. but his leader skill ain that good. use elza as a leader. for other teammates use zelnite for his ability to add battle crystals to your bb gauge and increase heart crystal and battle crystal drop (but be careful of questing with zelnite. you may get lots of junks items.) luther is amazing. his 6 star super brave burst is a 28 hit combo that at lvl 10 increases spark damage by 50% but elzas super brave burst does it better so hes just good for sparks and damage really (also his 6 stars normal brave burst is a relatively powerful single target attack the produces lots of battle crystals. handy on tougher boss fights.) tiara is great to raise for one reason: grand gaia chronicles vargas dungeon. but you have lucca to add water element so I guess just add her for her healing over time ability. the rest are just ok. keep Len though because his 6 star may be very powerful.

so my recommendations are

Elza(lead),Luther,Zelnite,Lucca,Tiara,Len

Themis nd zelban are ok but they aren't that good. keep them though and raise themis for Maxwell.