Official Developer Resource
Besides multi-dimensional G2 characters, CTA 3 provides all the tools to structure sophisticated bone rigs to design your own 2D characters from Images. This is the "G3" character. G3 characters adopt subdivision topology for smoother bending effects and flexible joints. Below is the comparison between G2 and G3 characters.
G3 character production requires CrazyTalk Animator 3 Pipeline edition or above.
G2 character production requires CrazyTalk Animator 2 Pipeline edition or above.