The reason it is in pieces like this is so that each individual part can be moved. To animate it each point will have its centre pivot point moved to where the pieces is expected to move and will be rotated on that point, for example, the head's pivot point will be moved to where the neck would be. The finished model is below.
The mouse will also be made this way. Although the characters in the video are 2D, the backgrounds will still be modelled in 3D which includes things such as the church/cathedral and the forest. I realised this is a style similar to 'Paper Mario', however, something i want to avoid that is in 'Paper Mario' is when the characters rotate and look as thin as paper which is similar to 'PaRappa the Rapper', i want my video to be more similar to 'Who Framed Rodger Rabbit' where a cartoon character is in a realistic world rather than a paper man in a realistic world.








