UMAGiC

UMAGiC is an integration of the power of UMA with the ease of Game Creator (UMA + Game Creator = UMAGiC, get it?) . With a packet of Conditions, Actions, and States you can access UMA’s ability to adjust character blendshapes during or before runtime as well as to add items and features such as clothing armor, or weapons quickly and easily.

UMAGiC is available at https://hub.gamecreator.io/content/item/OjnaAKMWPfbkYHUmiDOa

Or (hopefully soon) through the Unity Asset Store http://u3d.as/2twN (pending approval).

Here are some videos to get started:

Getting an UMA Character into Game Creator (does not require UMAGiC)
Using UMAGiC to create a Character Creator (Gender, Height, Head Size, Save and Load)
Creating a Character Creator (Skin Color, Hair)
Equipping (a hat) and integration with Game Creator Inventory