User blog comment:Xilinoc/Ch. 633 - FRIEND 3/@comment-24769684-20150702191329/@comment-1338810-20150703024918

Well seeing as the underbelly is a metaphor for a weak spot, it's a pretty apt epithet for NaNaNa's ability.

And a quick glance through a thesaurus reveals that there really isn't a b word synonymous with balance other than "balance." The closest I came up with was "ballast", which is something that provides balance. It's probably like "The Zombie"; there's not a whole lot of other ways Haschwalth's epithet can go other than "The Balance."