User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-30924344-20171231165145/@comment-30924344-20171231165936

Not really grandparents as they were born after Vali so they are his younger siblings. Big brother Vali has to keep his naughty little siblings in line lol

Baalberith defeated because Vali smacked his hand and called him a bad boy xDDDD

Grandparents wise, well every devil in the 72 Pillars descends from Lilith through the first ancerstors (japanese wiki says all devils originate from Lilith) so every grandparent is Vali's grandparent. Lol Vali has just got technically, the biggest family in fiction.