Hard to compare if its better, weak point of moro is no articact slot which can be problem for a warior, for mage not so much since he can have 3 artefactd anyway.

Moro is useful until you get the splinter from him. Then you can happily swap him with Agvares and enjoy his multitude of useful slots. I admit that +3 attack/+1 undead morale is pretty decent bonus, but that is easily alleviated but slapping a +5 Atk/Int Dead Skull on Agvares' artifact slot :)

what are the locations of the companions ?
 

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the game says there are 7 i only found 4 and finished the game:
THE PIRATE
THE ELF WIZARD
THE DWARF THAT GIVES CRITCAL bonus TO ARCHERS
THE PALADIN
WHERE ARE THE OTHERS?

You missed moro dark in elon ( i bet you killed him XD), and agvares in shettera (in the cave where von cracow is located) oh and ORC on uzala island

i found them thanks
 

what does moro 100% dark power do?

Nothing. It is 100% at start and it rises if you use undead or demons in your army (including reserves). If you get it to 0% by fighting demons and undead, you will get the Splinter of Dark item (Regalia), which, when equipped, gives +10 attack to all Black Knights and gives them the always retaliate trait.

Am I the only one who thinks Moldok (The Orc) is one of the better retainers? His "skills" are pretty useless, but his items slots seem to be the best. Closely followed by Elenhel (The Mage). This is for a warrior by the way. I seem to be lacking Regalia/Artifact slots. :P

NOt realy, hes not bad but i go for jimmy or moro usualy

Early on I like Elenhel for the extra shot at a 50% xp scroll with each scroll scribe, even if I'm not playing as a mage (sometimes means I need to find a +10 int scroll and buy lots of equipment to meet the 20 threshold). I also like throwing the Dress of the Princess on him, both because it provides nice bonuses and because it suits him well.

Later on my choice is usually more dependent on the gear I end up with than the unique abilities.

For me Jimmy is the best .I use sea dogs ,and the +700 leadership is also good.