User blog comment:Aizen.sama/Are Espadas, Vasto Lorde(s)?/@comment-949679-20100420234105

I'd say espada 1,2 and 4 are Vasto Lorde. Primera (Coyote Starrk and Lilynette Gingerback) as they had a human form before becoming an espada, segunda (Barraggan Luisenbern) had a released form almost identical to his hollow self and the quetra (Uliqurria Cifer) segunda epata resembled the Vasto Lorde silhouette.