I want to start making some custom transformers, but the only thing i can find around here to do the sculpting is super sculpy. Is there something (clay) out there that doesnt require baking in the oven? something that dries on it's own?
any help would be appreciated.

Self-drying clay is usually rather brittle compared to it's bake-able cousins. Plus it gets soggy again should it get drenching wet.

Really the best thing to use for adding onto an existing figure is an epoxy putty of some kind. For sculpting, you best bet is one that says it can cure when wet. That way you can dribble a little water onto it to smooth it out before it dries.

Great thanks for the quick reply, do you happen to know a name and where I might be able to find the type of epoxy you are talking about

Try hardware stores. That stuff is mainly used for plumbing.

I cannot recommend Aves Fixit Sculpt highly enough.

Miliput and Kneadite are great choices for you, while expensive.

Thanks for everones input, I am gonna try them all for my animated Omega supreme project

a cheap and easy to find subsitute it mighty putty(the stuff billy maze whores)
the only draw back is that you need to be damn quick when molding it.
The main advantage is that it cures hard, and you can drimmel it down easy enough.

Its work time very similar to "green stuff" that games workshop puts out.
However it lacks the sticky bubble gum texture that makes gren stuff nearly unusable to me
I've used a few times now, mostly as filled but it works quite well
You can find it in\near the hardware section of most targets

If you're building from scratch, or even mostly, you might want to try styrene sheets. (not styrene foam. regular styrene is not like foam.) It's what most scratch-builders use. It's pretty much plastic. It's more flexible than what most TFs are made from, but in thicker widths and assembled and glued into shapes it holds up well.
You see it being used even in big projects like Anemis's Metroplex.
Even if you're building something very organic, with non-linear curves, you can still use styrene as a base and then cover the surface with some kind of sculpting putty. (as long as it bonds properly. I suppose you'll have to experiment. hopefully there's some kind of data sheet for one of the two materials to warn you against toxic combinations. speaking of toxicity, sanding it, or even sawing it might be hazardous. I don't know where you'd find info on that. I guess start with wikipedia. I'm not sure what kind of precautions you would have to take against it. My understanding is that regular dust masks are insufficient against many of the more harmful airborn particles, but I don't know what specifications you would need.)