User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-16281343-20141203074638/@comment-1359322-20141204141034

Maybe it's because the BB can also make his allies lose their fighting spirit. Or worst maybe they'll get infected by Dulio's laziness. O___O

But on a serious note, i'm guessing Dulio's BB might have other abilities in it.