Two Brothers, one demon one ghost

Constantine was call to the watch tower to summon a ghost but instead the plan backfire as he didn't summon any ordinary ghost but he summoned the king of ghost !!!!??? but wait a minute...............

why does the king of ghost look similar to robin?

Do they know each other?

why are they hugging?

How do they know eachother?

⚠️⚠️warning ⚠️⚠️

torture, abuse, human experiment (in this case ghost experiment), curse words etc