User blog comment:Linathan/Unit Spotlight: Demon Champion Raaga/@comment-26293544-20150618005829/@comment-26140304-20150618034828

In a sense, Liquis is actually right about Alpha and Rize being similar due to the fact that they are both pure damage dealers. They both fulfill similar roles with each other.

Starting with the Oracle Knights batch, you will see more buffs including "boost to BB gauge fill rate", which is a replication of a weaker Ares' Excelsior. You can also see that some of the old units who received 7* evolutions utilize this effect, including Alice and Sagavehl.