Thank you, that fixed it. Also, that was just part of a bigger command I made. The real command was this :P
/summon falling_block ~ ~1 ~ {Block:command_block,Time:1,Data:1,TileEntityData:{Command:"fill ~-1 ~-1 ~~3 ~-4 ~4 stone 0 hollow"},Passengers:[{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"summon wolf ~ ~5 ~ {ActiveEffects:{Id:14,Amplifier:0,Duration:20000000,ShowParticles:0b}],Tags:["wolf"]}",auto:1b},Passengers:[{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"summon armor_stand ~ ~5 ~ {Tags:"NPC"],ArmorItems:[{id:"diamond_boots",Count:1b},{id:"diamond_leggings",Count:1b},{id:"diamond_chestplate",Count:1b},{id:"skull",Count:1b,Damage:3}],NoBasePlate:1b,ShowArms:1b,Invulnerable:1b}"auto:1b},Passengers:[{id:"falling_block",Block:chain_command_block,Time:1b,Data:1b,TileEntityData:{Command:"setblock ~ ~-5 ~1 repeating_command_block 0 replace {Command:"tp @etype=armor_stand,tag=NPC] @e[tag=wolf]",auto:1b}",auto:1b},Passengers:[{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"scoreboard objectives add isWalking dummy",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~-1 ~-7 ~ repeating_command_block 2 replace {Command:"scoreboard players set @etag=wolf] isWalking 1",auto:1b}",auto:1b},Passengers:[{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~-1 ~-8 ~-1 chain_command_block 4 replace {Command:"scoreboard players set @etag=wolf] isWalking 0 {Motion:[0.0,0.0,0.0]}",auto:1b}",auto:1b},Passengers:[{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"scoreboard objectives add NPCinfo dummy",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"scoreboard players add Mode NPCinfo 1",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"gamerule commandBlockOutput false",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:
{Command:"fill ~1 ~ ~ ~4 ~ ~1 stone",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"fill ~1 ~ ~ ~4 ~ ~1 redstone_wire",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"fill ~2 ~-1 ~1 ~3 ~-1 ~1 unpowered_repeater 5",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"fill ~2 ~-2 ~ ~3 ~-2 ~ unpowered_repeater 7",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~1 ~-3 ~ command_block 1 replace {Command:"scoreboard players set Walk NPCinfo 1"}",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~4 ~-4 ~1 command_block 1 replace {Command:"scoreboard players set Walk NPCinfo 2"}",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~1 ~-5 ~1 powered_repeater 5 replace",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~1 ~-6 ~1 unpowered_repeater 5 replace",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~1 ~ ~ repeating_command_block 5 replace {Command:"scoreboard players test @etag=wolf] isWalking 2",auto:1b}",auto:1b},Passengers:[{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~2 ~-1 ~ chain_command_block 13 replace {Command:"scoreboard players test Walk NPCinfo 1 1",auto:1b}",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~3 ~-2 ~ chain_command_block 13 replace {Command:"entitydata @etype=armor_stand,tag=NPC] {Pose:{LeftLeg:[319f,0f,0f],RightLeg:[21f,0f,0f],LeftArm:[51f,0f,0f],RightArm:[322f,0f,0f]}}",auto:1b}",auto:1b,Passengers:[{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~4 ~-3 ~ chain_command_block 5 replace {Command:"scoreboard players test Walk NPCinfo 2",auto:1b}",auto:1b},Passengers:{id:"falling_block",Block:chain_command_block,Time:1,Data:1,TileEntityData:{Command:"setblock ~5 ~-4 ~ chain_command_block 13 replace {Command:"entitydata @etype=armor_stand,tag=NPC] {Pose:{LeftLeg:[21f,0f,0f],RightLeg:[319f,0f,0f],LeftArm:[303f,0f,0f],RightArm:[44f,0f,0f]}}",auto:1b}",auto:1b}}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}
