This step makes your companion follow you and listen to your orders.

1. Get the NPC you want as your new companion.
2. Open the console
3. Click at that NPC
4. Type "Stopcombat"
5. For more loyality to you, type "removefromallfactions"
6. Type "setconsolescopequest followers"
7. There are two ways:
A) Type "Forcerefintoalias dogmeatcompanion" (Will keep distance like Dogmeat, but wont be able to keep companions with Dogmeat alias ("B" has no Dogmeat alias))
B) Type "Forcerefintoalias companion" (Will stay close, but wont be able to keep companions with no Dogmeat alias ("A" has Dogmeat alias))
8. Type "Setrelationshiprank player 4"
9. Type "Setplayerteammate 1"

Done, your companion is ready. But if you want your companion get better (For example, stop attacking thoose settlers) follow the next steps.

This is easy.
(Use this for 1st companion, or if you're using Dogmeat.)
1. Open Console
2. Select your first companion.
3. Type "setconsolescopequest followers"
4. Type "Forcerefintoalias companion"
5. Type "Setrelationshiprank player 4"
6. Type "Setplayerteammate 1"

(Use this for 2nd companion, or if you're using any other companion than Dogmeat.)
1. Open Console
2. Select your first companion.
3. Type "setconsolescopequest followers"
4. Type "Forcerefintoalias dogmeatcompanion"
5. Type "Setrelationshiprank player 4"
6. Type "Setplayerteammate 1"

This will prevent you companion from: running away, attacking settlers/DC guards and not helping you in fight.
There are two ways to do it

1) Original, worse way
1. Open Console
2. Select your companion
3. Type (If your companion fights with someone that isnt hostile to you) "Stopcombat"
4. Type "Setav 2bc 1"
5. Type "Setav 2bd 4"
6. Type "Setav 2c1 2"

2) Better way suggested by Danballs
1. Open Console
2. Select your companion
3. Type "addtofaction 1c21c 1"

Done, your companion will be more loyal to you now, and wont attack any innocent people!

WARNING! USE ONLY ON HUMANS!

1. Take off any headwear of your companion
2. Open console
3. Select your companion
4. Write down your companion's REF
5. Type "Showlooksmenu (Companion's REF)"
6. Change the look of your companion

This will let you make your human companion get a new look!

This will make you feel safe about your companion:

For non-unique NPCs (Yao Guai, Deathclaw, Molerat etc.)
1. Open console
2. Select your companion
3. Type "setav health 1000000"

For unique NPCs (All named NPCs and few unnamed)
1. Open console
2. Find your companion's ID
3. Type Setessential (NPC ID) 1

Now your companion wont die!

This short step will make your companion stop fighting with you after you hit him.

1. Open console
2. Select your companion
3. Type "stopcombat"

Got tired of your companion but dont want to disable it? Follow the Next steps!

1. Open console
2. Click on you companion and write down his ref (the numbers and letters at the top of console menu like: 0001cf3d[EP] (Dont write [EP] or [PP]!))
3. Type "setconsolescopequest followers"
4. Type "emptyrefalias dogmeatcompanion/companion" (Depends on your choice during making.)

And this is how to get your companion back!

1. Open console
2. Type "prid (Companion's REF)"
3. Type "Moveto player"
4. Type "setconsolescopequest followers"
5. Type "forcerefintoalias (dogmeatcompanion/companion)"

This might take a while, depending on your stealing perk.
1. Click on your companion and type "setplayerteammate 0"
2. Save the game.
3. Try to steal the core.
4. After he left your power armor, select him again and type "setplayerteammate 1"

This short step will show you how to build ANYWHERE!

If you are near any location and that location is marked as "Cleared"

1.Open console
2.Type "Player.placeatme c1aeb"
3.Close console
4.Activate your new workshop station.
(Repeat step 4. every time you want to build)

If you arent near any location or the location you are near isnt marked as "Cleared"

1. Open Console
2. Type "Player.placeatme c1aeb"
3. Type help "(Name of location you are at)" 4 lctn
4. Search for the name of that location and remember it's ID
5. Type setlocationcleared (ID of location you are at) 1
7. Close console
6. Activate your workshop station.
(Repeat steps 6. everytime you want to build!)

Idea given by user Magic Gonads ( ͡° ͜ʖ ͡°)

Second method

1.Open Console
2.Type "Player.placeatme c1aeb"
3.Type "TGM"
4.Close Console
5. Hold V
6. After you finish, open console.
7. Type "TGM" (this time to disable it.)
(Repeat steps 1., 3., 4., 5., 6., and 7. everytime you want to build!)


Done! Enjoy your new House!
(You will not be able to have any settlers and you wont be able to move fast travel point, remeber that!)


A small list of locations that are looking nice enough to settle:
Vault 81 entrance
Vault 101 entrance
Diamond City
Diamond City entrance
Salem
Libertalia

1. You can use traders as companions. Just select "talk" while being close and talking to him.
2. If your companion has a problem with an limb, open console, select him and type "resurrect". This SHOULD fix the problem
3. You can spawn your wife/husband and use him/her as a companion. Just type "Help Nora 4" to get your wife's ID or, if you are a female, type "Help Nate 4" to find your husband's ID.
4. If your companion is too big to fit indoors, try using "setscale 1.00", "setscale 0.75", "setscale 0.50" or "setscale 0.25"
5. You can have two companions. Just make sure one has Dogmeat alias (A), and the another one has normal companion alias (B).

After long break, im back to Fallout 4.
Here i will place IDs of NPCs that can be used as a good custom companions that you can make essential.
ULF - Unique legendary friendly

Deathclaws
Everyone favorite creatures, Deathclaws! They might not appear indoors, becuse they are big.
1. 2499d3 - ULF alpha deathclaw
2. 2499d4 - ULF deathclaw
3. 2499d5 - ULF glowing deathclaw
4. 2499d6 - ULF deathclaw matriach
5. 2499d7 - ULF savage deathclaw
6. 2499d8 - ULF albino deathclaw
7. 2499d9 - ULF chameleon deathclaw
8. 2499da - ULF mythic deathclaw

Behemoths
They are too big to be used indoors.
1. 56b7c - Swan

Super mutants
Want to replace Strong, or you just want to have a super mutant companion that wont care about your choices?
1. 3b2bf - Dead Eye
2. 6b503 - Virgil
3. 113991 - Hammer
4. 3f2ea - Fist

Synths (1st/2nd gen)
Somenthing for Institute fans!
1. 1cfb19 - A-2018
2. 1cfb18 - Z4K-97B
3. 1cfb17 - XPN-20A
4. 249A19 - ULF Synth Strider
5. 249A1A - ULF Synth Patroller
6. 249A1B - ULF Synth Seeker
7. 249A1C - ULF Synth Trooper
8. 249A1D - ULF Synth Stormer
9. 249A1E - ULF Synth Assaulter
10. 249A1F - ULF Synth eradictor


Synths (3rd gen)
Somenthing for Institute AND Railroad fans!
1. 4efe2 - K1-98 (Jenny)
2. 54acf - Glory
3. e20fd - Gabriel
4. 4efec - Z2-47 (Courser)

Humans
No need to say anything.
1. 566bb - Nate (Your husband or player character)
2. 566bc - Nora (Your wife or player character)
3. 2cbf - Myra (Diamond city surplus)
4. 2cb2 - Moe (Swatters)
5. 2cbb - Solomon (Chem-I-Care)
6. 2cd4 - Polly (Choice chops)
7. 2cb7 - Arturo (Commonwhealth Weaponry)
8. 4ad4d - Pickman
9. 16a65 - Slab (Raider)
10. 4b0bf - Tower Tom (Raider)
11. ae14c - Demo (Raider)
12. 1a4e5c - Red Tourette (Raider)
13. 4d472 - Barney Rook


Robots
Watch out for EMP!
1. 2ef4 - Miss Edna (Miss Nany)
2. 46d0c - The Director (Mister Gutsy)
3. 890c1 - Deezer (Mister Handy)
4. 2cda - Takahasi (Protectron) (Power Noodles)
5. bb1f9 - Peepers (Eyebot)
6. ef3f5 - Ol' Rusty (Eyebot)
7. 14404a - Atom's Wrath (Assaultron)
8. 249B00 - ULF Sentry Bot
9. 249B01 - ULF Siege Breaker Sentry Bot
10. 249B02 - ULF Annihilator Sentry Bot
11. 249B03 - ULF Annihilator Sentry Bot MK. II
12. 249AF6 - ULF Protectron watcher
13. 249AF7 - ULF Protectron guardian

Feral Ghouls
The mindless zombies.
1. 2499e3 - ULF glowing one
2. 2499e2 - ULF charred feral ghoul
3. 2499e4 - ULF putrid glowing one
4. 2499e5 - ULF bloated glowing one
5. 2499e1 - ULF gangrenous feral ghoul
6. 2499DF - ULF withered feral ghoul
7. 2499DE - ULF feral ghoul reaver
8. 2499DD - ULF feral ghoul stalker
9. 2499DC - ULF feral ghoul roamer

Bloodbug
That gigant, flying, annoying mosquitoes.
1. 2499CD - ULF Bloodbug
2. 2499CE - ULF Red widow bloodbug
3. 2499CF - ULF Infected bloodbug
4. 2499D0 - ULF Glowing bloodbug
5. 2499D1 - ULF Vampiric bloodbug

Bloatfly
That gigant, flying, annoying blowfly
1. 2499C9 - ULF Festering Bloatfly
2. 2499CA - ULF Black Bloatfly
3. 2499CB - ULF Glowing Bloatfly

Stingwings
Another insects...
1. 249A07 - ULF Stingwing
2. 249A08 - ULF Stingwing darter
3. 249A09 - ULF Stingwing skimmer
4. 249A0A - ULF Glowing stingwing
5. 249A0B - ULF Stingwing chaser

Radscorpions
Gigant and though scorpions!
1. 2499FF - ULF Radscorpion
2. 249A00 - ULF Radscorpion hunter
3. 249A01 - ULF Glowing radscorpion
4. 249A02 - ULF Albino radscorpion
5. 249A03 - ULF Radscorpion stalker
6. 249A04 - ULF Radscorpion predator
7. 249A05 - ULF Deathskull radscorpion

Mole rats
Its what happens when you mix a rat and a mole together using radiation.
1. 2499f9 - ULF Rabid mole rat
2. 2499fA - ULF Glowing mole rat
3. 2499fB - ULF Mole rat brood mother

Radroaches
Most useless creatures in the game!
1. 2499c4 - ULF Radroach

Addon Creatures
X at the begining is the number of load order. Type the number of addon's load order instead of X.

Gulpers (Far Harbour)
Does anyone else thinks that they are similar to Fallout 2 Wanamingo?
1. X03fe2c - ULF Gulper devourer
2. X03fe2b - ULF Glowing gulper
3. X03fe2a - ULF Gulper
4. X03fe29 - ULF Gulper (Weaker variant)

Ghouls (Far Harbour)
The mindless zombies... On an island.
1. X01fa95 - Fog Ghoul

Remember that most IDs of ULF unnamed NPCs that are perfect for companions starts from 00249!
Using NPCs that's ID starts from FF might be good too, but i didnt tried it yet.

Since Wiki isnt fully filled yet, i would appritiate if someone could help me get the real names of (weaker/stronger variant)

Your character might react to your companion as he (your companion) would be a Dogmeat. That's because Dogmeat alias was used to make him follow you.

After saving and reloading, your companion might be gone.

Sometimes your companion will be attacked on sight. You should try steps "Preparing your companion" and "Making your companion more loyal and less aggresive" again. If it wont work, you should try with a new one.

If you will have any issues with your companions , tell me what are those and how you got them, and i will write them down here and try to find solutions for them.

Since people are asking me how to rename, there is no way to do this without mods. But i found a tutorial about renaming. Still, you need two mods to make that work. Here's the link: http://www.nexusmods.com/fallout4/articles/8/?

Things that helped me with this guide:

A Youtube video done by Atlas@Gaming: https://www.youtube.com/watch?v=Lu80Nqk5HCU

First version of this guide (Which was broken, so i created this guide you're reading right now.), done by Vadnais™, who i made a co-author of this guide: http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=570741327