/summon Villager ~ ~1 ~ {Profession:1,CustomName:"Evil Dr T",CustomNameVisible:1,CanPickUpLoot:0b,Attributes:[{Name:"generic.maxHealth",Base:500},{Name:"generic.knockbackResistance",Base:0.05f},{Name:"generic.movementSpeed",Base:3f}],Fire:100,DropChances:[0.9F,0F,0F,0F,0F],Equipment:[{id:"minecraft:diamond",tag:{display:{Name:"Dr T's Diamond"}},Count:5},{},{},{},{}],Riding:{id:Slime,Size:3}}