en 1.8 /Mighty Mobs & Pets

/summon Zombie ~0 ~1 ~0 {Equipment:[{},{},{},{},{Count:1,id:skull,Damage:3,tag:{SkullOwner:MHF_Herobrine,display:{Name:Herobrines head}}}],CustomName:Herobrine,CustomNameVisible:1,Attributes:[{Name:generic.maxHealth,Base:999},{Name:generic.movementSpeed,Base:1.0},{Name:generic.attackDamage,Base:999}],DropChances:[0.0F,0.0F,0.0F,0.0F,2.0F]}