▁Se ed ▁of ▁Dest ruction ▁( 4 ▁issues , ▁March – J une ▁ 1 9 9 4 ) ▁and ▁was ▁a ▁major ▁part ▁of ▁the ▁com ic ▁until ▁Hell boy ▁leaves ▁the ▁B . P . R . D . ▁at ▁the ▁end ▁of ▁Con quer or ▁W orm . ▁At ▁this ▁point ▁the ▁B . P . R . D . ▁series ▁began , ▁following ▁the ▁agents ▁of ▁the ▁B . P . R . D . ▁such ▁as ▁A be ▁S ap ien , ▁L iz ▁Sh erman , ▁Roger ▁and ▁Johann ▁Kra uss . ▁ ▁B . P . R . D . ▁was ▁once ▁considered ▁a ▁" series ▁of ▁min is eries ", ▁with ▁each ▁story ▁reading ▁as ▁a ▁stand - alone ▁story ▁easily ▁enough , ▁but ▁over ▁time , ▁an ▁over arch ing ▁story ▁began ▁to ▁develop . ▁When ▁a ▁new ▁story ▁cycle ▁began , ▁the ▁series ▁was ▁ret itled ▁B . P . R . D .: ▁Hell ▁on ▁Earth , ▁then ▁two ▁years ▁later ▁when ▁the ▁series ▁hit ▁its ▁ 1 0 0 th ▁issue , ▁it ▁was ▁rest ruct ured ▁as ▁an ▁on going ▁month ly ▁com ic . ▁This ▁was ▁done ▁for ▁many ▁reasons , ▁most ▁not ably ▁to ▁make ▁the ▁reading ▁order ▁simpler ▁to ▁the ▁un init i ated . ▁ ▁St ories ▁B . P . R . D . ▁began ▁as ▁a ▁series ▁of ▁min is eries , ▁but ▁it ▁also ▁had ▁an ▁on going ▁number ing ▁on ▁the ▁inside