At the moment I'm having problems in the game because Chie, Yasuke and Yukiko all level up at the same rate as their personas. Meanwhile Main Character's level is about 6 higher than Izanagi and so Main Character is a lot weaker than the other people in the team. Do you keep having to use Skill even if it's not that good or effective?

You'll have to fuse new Personas often. You can create Personas with levels less than or equal to your current level. They also gain bonus experience from Social Links, so you can actually create Personas with levels higher than your own.
You do not need to keep Izanagi, so I suggest you fuse him into something better.

I'm not sure about P4 since it's not here yet, but i'm pretty sure that in P3 you didn't have to use skills just to level up your persona. It would get the same amount of EXP as the actual character it's equipped to regardless of the attacks you use in battle. Your Izanagi is probably naturally slower to level up than the others.

I could be wrong though. Like i said, i haven't been able to play the game yet.

I see, silly me. Their personas obviously take care of themselves because it's the only one they have.

If you are level 6 and still using Izanagi there is a problem.

There are so many better options available to you.

you can't use one persona the whole game.

izanagi is cool and all, but the point of social links and fusion is to make persona that are higher than your level and stronger than you should be to get an advantage.

Like it's already been said before, you will just have to constantly fuse new personas. Your best bet is just maxing out some SLs and then fusing personas under that specific SL for a nice chunk of extra XP. With a maxed out SL, you can probably get around 5 extra levels when fusing.

In the beginnign of the game you ahve only 6 persona slots so as soon as you fill them up you should go back and fuse .  That way you have space to take on new persona if you get them.

Yeah, this game is all about fusing personas. And since you gain bonus experience points from your Social Links, you'll se that in a near future, your fused personas will even surpass your Main Character's level.

In addition to what others said, and in my opinion, pay attention to the resistances / weaknesses the Personas have when fusing. If I had good memory, I would have tried to keep a good balance of resistances between the personas I had, but I never remembered any of it. ^_^; So that for any boss I could find I at least had a persona Strong against the element(s) it uses or that Nullified it, at best (or at least a persona that was not weak against the bosses attacks).

When fusing, if you have a skill that makes a persona immune to light, for example, try to inherit it to some persona that has a weakness against it (and if it already has a Null Dark, you just got yourself a protection against both Hama and Mudo). (I died a few times in P3 due to those spells... but not in P4, as far as I remember).

EDIT: Something important when fusing: The new Persona will inherit some randomly chosen skills from the others, but if you re-select the same Personas and try again (before actually fusing them) the inherited skills will be randomized again, so you can retry choosing until a Persona has a skill you want (there are some skills that are not possible on some personas, however). Some people spend more than an hour re-selecting until they get the specific combination they want. (Not me...)

Nulling Light and Dark is especially important in Persona 4 because your other party members waste your damn homonculi. Ugh.

"Nulling Light and Dark is especially important in Persona 4 because your other party members waste your damn homonculi. Ugh.
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