None of the Berserkers in my game want to equip any armor. Unmodded they usually wear one or two pieces of Bear armor (medium) on them.

One of these mods causes the problem. I think it might be one of the mods that affect all NPC's, like the faces or clothing mods. I am still looking around for possible patches.

My modlist:

_001_ Morrowind.esm
_002_ Tribunal.esm
_003_ Bloodmoon.esm
_004_ Morrowind Patch v1.6.4.esm
_005_ THE Facepack Compilation.esm
_006_ Better Heads.esm
_007_ Better Heads Tribunal addon.esm
_008_ Better Heads Bloodmoon addon.esm
_009_ Texture Fix - Bloodmoon 1.1.esm
_010_ VGreetings-Hit.esp
_011_ IceNioLivRobeReplacerALL.esp
_012_ Better Clothes_v1.1.esp
_013_ More Better Clothes.ESP
_014_ VGreetings-Thief.esp
_015_ VGreetings-Flee.esp
_016_ VGreetings-Idle.esp
_017_ VGreetings-Attack.esp
_018_ VGreetings.esp
_019_ Traditional Vampire.esp
_020_ Animal Behaviour.esp
_021_ WeatheredSigns.esp
_022_ Dodge Mod 1.2-WD (Enhanced-LD) (Tribunal).esp
_023_ Armor Effects-LD 2.0-WD.esp
_024_ Vivec_Voice_addon TRIBUNAL.esp
_025_ Dagoth Gares_Voice_addon v1.1.esp
_026_ Clean Better Daedric.esp
_027_ Dagoth Ur Voice Addon.esp
_028_ DB_Attack_Mod3.esp
_029_ Almalexia_Voicev1.esp
_030_ barilzar_voice.esp
_031_ Better Bodies.esp
_032_ werewolfrealism-moononly.esp
_033_ Cloth Bracer Alter.esp
_034_ Clear Ice.esp
_035_ STA_guides_replacer.esp
_036_ EcoAdjCrime.esp
_037_ LeftGloves.esp
_038_ Clear Glass.esp
_039_ drenbalance.esp
_040_ EcoAdjDaedricDrops.esp
_041_ Vampire_dreams_reduction.esp
_042_ Steel Broadsword Fix.esp
_043_ Psy_UniqueDremora_T.esp
_044_ TownSounds.esp
_045_ Improved_No_Glow_v1-MW_Trib_Blood.esp
_046_ NighttimeDoorLocks-LD 1.1a.esp
_047_ elfheight.ESP
_048_ k_weather (louder sounds).esp
_049_ k_in_tent.esp
_050_ Fair Magicka Regen (one Percent).esp
_051_ DodgeTribunal-v21.esp
_052_ Sound Enhancements.esp
_053_ Charming Ash Vampires.ESP
_054_ BAR_CreeperMudcrabRemover.esp
_055_ Moreclasses_0605.esp

Elfheight is a little mod of my own design that makes High Elves a bit shorter.

I tried to fix it with the editor by replacing the Beserkers' class (Acrobat) major skill Unarmored with Medium armor. I thought that perhaps the Unarmored skill prevented them from equipping any armor, so I created a mod that changed this and put it upfront in the load order. It made no difference however, so that approach at leastdidn't fix it.

Are they not even wearing boots and helmets sometimes? Because they never wear clothing or armor besides boots and helms, and even they are random depending on which variation of Berserker spawned.

Better Bodies gets rid of the underwear that the vanilla NPCs wear, but doesn't effect their boots and helmets.

They will have the armor in their inventory, but they just won't equip it. I made sure by killing them so I could see their inventory.

If they do not have certain statistics set for the armour, then they will not wear it (or, in other words, if they do not have a high enough skill in the armour type with which you are trying to equip them, then they will not actually equip the armour). Berserkers have a 100 rating for light armour, so they should equip that type easily. However, they have very low Medium and Heavy armour levels (so to have them equip said armour, one must change those stats to a higher number). While they do equip the medium over the heavy, they might not necessarily actually put the armour on (even if it is in their inventory). Every time I have run across a Berserker, they are usually completely starkers (despite their inventory) until I am at a higher character level. Most of the berserkers should be displaying their armour. However, there are two (a male and a female berserker) that have the ID "BM_berserker_f1_lvl5" and "BM_berserker_m1_lvl5" . These will not equip the bear armour (so perhaps you might just be encountering them at this point in your adventuring, as the others are higher in level and might be placed in leveled lists to appear once the character has also attained a higher level).

That was very interesting, thanks. I did see the ID's in the editor, but I just figued they didn't have the armors in the inventory. Kind of weird that the developers even bothered with a skill requisite for wearing them, while you can simply use levelled items instead. Makes me wonder if at some point the developers had plans to let NPC's pick up items in the world, like they kinda do in Oblivion.

After you kill them, activate the console and click on them. This will show you their ID. If they are the "lvl5" iterations of the Berserkers, then at least you would know it is not mod related. If they have the any of the other IDs, though, then it might very well be a conflicting mod and would need to be explored further to get you back in the game .

Thanks, your post proved a quick way for me to test it. They are indeed level 5. I also tested it at high level, all berserkers equip their armor at player level 60.

How do I use the editor to change the lvl5 berserker to equip their armor anyway? I had a brief look at it earlier, but I didn't see too many settings. It is a little weird, no other npc enemy in Morrowind really behaves this way. Nothing is stopping a level 1 player to equip a full set of Daedric either.

Set their unarmored skill low and the various light, medium and heavy armor skills high.

The game makes checks so that NPCs will use the best armor they have: so, for example, if the NPC has decent unarmored skill but low heavy armor skill, and a piece of heavy armor with a mediocre protection value... it may be perfectly possible that the NPC will be better protected without wearing that piece of armor.
So the game will do the best thing for the NPC and NOT equip the armor piece.

This usually happens because of the NPC's class: some classes are better skilled in Unarmored than in the various other armor skills.

I'm not so sure about that. I tried removing Unarmored from their class (Acrobat) with a mod (put it up front on the load order too), but that didn't change anything. It is possible though that it still had enough stat increases in Unarmored to negate it not being a major/minor skill..

BUT.. anyway, I need to access BM_berserker_m1_lvl5 and BM_berserker_f1_lvl5 somehow. Still haven't found it in the editor.

Removing it from their class won't do anything. Their skills are set individually under the NPC. Find the berserkers and open their individual skills. I'd recommend not decreasing their unarmored (otherwise it makes them easier to kill) but rather just increase their other armor skills, which should result in extra armor being better than no armor, so they should equip it.

Thank, I'll see what I can find.

Yup, I took a quick glance at those NPCs in the CS...
They have medium armor lower than unarmored, so that seems to be the problem. And Mytch is right, altering the class won't change this, because these NPCs are not set to auto-calculate stats.

Simply raising their medium armor skill should do the trick (since they wear nothing else than boots and helmet, lowering unarmored would indeed make them weaker).