User blog comment:Mohamed7845/Rhoa/Zenia/Raaga Who is Better/@comment-26926725-20150831185349

This decision is situational.

Rhoa: Rhoa's leader skill gives the 30% boost to HP as well as a 30% boost to ATK, but Zenia has a 80% boost. Also, Rhoa's leader skill boosts Spark damage and increases BB guage more than Zenia and Raaga. Rhoa is good for harder end-game content with bosses like Afla Dilith, who can change attributes. The added Earth and Thunder elements is very useful at times and can make a huge difference in the amount of damage output.

Zenia: Zenia's leader skill is based most heavily on a BB spam team or just an all-out attack team. Since Zenia's BBs don't have much to do with Spark and since most teams are able to Spark in their own way, Zenia isn't really useful for Spark teams. If you want a Spark leader or sub unit, go Raaga or Rhoa. A BB spamming team would be the best bet for Zenia to be leader on becuase of the major damage boost (80%) and the BB damage boost on her LS and her SBB and UBB.

Raaga: Most useful when you have a heavy spark based team as he can enormously boost their spark damage potential. Raaga's BB isn't really that useful at times, true that it makes BC and HC drop more but that isn't useful sometimes. His SBB and UBB are the most useful skills that most people use.