User blog comment:.vectorDestiny/Sonic Boom: Boxarts & New characters revealed/@comment-4061882-20140725212712/@comment-24229579-20140726183940

They are those kind of characters that serves more as a comic-relief. They are married for 700 years and they make jokes about each other.

And yes, they will indeed appear that way, apperently, with the robotic part being in 3D while themselves being 2D.