Talk:Unit Leveling/@comment-190.193.1.221-20150522154210/@comment-36.73.148.216-20150611091035

Base 10, is for common unit such as slime,goblin,merman,etc [And also for the Six Heroes]

Base 15, is for (usually) free unit, such as Lario, Lemia, Sibyl Sisters. But when they get into 6 Star their EXP Value turns into Base 21, except for Sibyl Sisters.

Base 21, this is for Rare Summon Unit, such as Sefia, Raaga, Feeva, and other unit that you summoned in the Rare Summon

Your welcome :D