3d object between two panels

hello…
i’m trying to put a 3d character between two ui panel one of this will be the background…which is the best way?

To be more clear i’m trying to achieve a dialogue system so i have to put 3d character between the background one and the text field

can be done by put a speite render inside the canvas but it won’t be scaled with the canvas…

i need to keep the character outside of the canvas component… anyway to do it?