Talk:Mavis Vermilion (Omni)/@comment-37445651-20181108142057/@comment-25943092-20181108151755

When you evolve any unit (except Omni+), their BB level will be reduced by half. So if you have a 7 star with UBB, when evolved it will be reduced to SBB level 1. It's always best not to use frogs to boost BB until you fully evolve the unit of your choice.