You get to create your character so that's one. You can get up to three companions known as "Pawns". The first pawn is pre-set but the next two, you get to create from scratch on which you choose gender, physical features and the RPG class.
Also, you can hire other Pawns to replace any of your pawns. You can also connect online to recruit other people's pawn or offer your pawns to the Dragon's Dogma community and have them return to you with EXP and random loot.
It's actually the other way round. You get the first one, which is preset at first until you finish one of the first quests, then you get to create your one 'main pawn' from scratch, and then can hire upto two more, either game-generated or via online using other player's main pawns which are paid for using 'rift crystals' picked up as loot or quest rewards, a currency independent of the typical xxx 'gold' you also manage.
You can change your pawns gear, and like you said, it's a lot about management and forward planning.
Honestly, I bought the game and enjoyed it for a few weeks, but it seemed a lot less involving to me, especially when compared to Skyrim. The map isn't as big, but it takes ages to get from one area to another due to only being able to access certain areas due to hills, etc, meaning you spend most of your time running paths you've ran 3 times in the last hour.
Also, I thought the boss battles were pretty boring. I found the combat system a little bit button-bashy and not like the tactical dance when using a sword and shield fighter in Skyrim (sorry for the constant comparison, but it's the only other fantasy RPG I've played). This was compounded by the ridiculously fast respawn time, which just became really annoying to me, having to fight a Chimera three times in a game week in exactly the same spot, for example. And the voice acting, oh don't even get me started.
The only great positives I saw where the character customisation and the online aspect of using other people's pawns, that was pretty cool. Seeing your pawn get a really high rating from someone and getting some good loot was always satisfying.
It was a good game, and worth the £18 I paid for it, but I've already traded my copy in. It was nowhere near the standard in Skyrim, in my opinion. I'd fully recommend it if you were desperate for a fantasy RPG, but that would be it.