 Jamie Delano returned to the title on several occasions . Between the Garth Ennis and Paul Jenkins runs on Hellblazer , he finally told the story of why John 's best friend Chas ' owes ' him , and he returned again for one of the five Christmas stories in issue # 250 . He also wrote the mini series The Horrorist in 1995 , and Bad Blood in 2000 , both featuring John Constantine . A more substantial return was made in 2010 for a hardcover graphic novel Hellblazer : Pandemonium with artist Jock to commemorate the 25th anniversary of John Constantine 's first appearance in Swamp Thing . 
 Jamie Delano returned to the title on several occasions . Between the Garth Ennis and Paul Jenkins <a href='uninflect' title='1'><mark>runs</mark></a> on Hellblazer , he finally told the story of why John <a href='null_genetive' title='2'><mark>'s</mark></a>best friend Chas ' owes ' him , and he returned again for one of the five Christmas stories in issue # 250 . He also wrote the mini series The Horrorist in 1995 , and Bad Blood in 2000 , both featuring John Constantine . A more substantial return was made in 2010 for a hardcover graphic novel Hellblazer : Pandemonium with artist Jock to commemorate the 25th anniversary of John Constantine <a href='null_genetive' title='3'><mark>'s</mark></a>first appearance in Swamp Thing . 
Jamie Delano returned to the title on several occasions . Between da Garth Ennis and Paul Jenkins run on Hellblazer , he finally told the story of y John  best homie Chas ' owes ' him , and he returned again fa one of tdafive xmas stories in issue # 250 . He also wrote thdaini series Thedarrorist in 1995 , and badd Blood in 2000 , both featuring John Constantine . A more substantial return was made in 2010 for a hardcover graphic novel Hellblazer : Pandemonium with artist Jock to commemorate the 25th anniversary of John Constantine  first appearance in Swamp Thing .