i found a great model for  him if he were to be a boss right here  

still even though this is a player skin i think it might work for the boss's model and if he were to be created then i think he should spawn Cybermats and cyber mites

-whovian_15

the " CyberConverted Doctor" Can be a mob ... i think. :D 

Thank You . :3 

your welcome sir

Here's the problem: It just doesn't make sense. 
How can you have more than one Cyber Doctor?

How can you kill the Doctor?

Is "Spawning Cybermats and Cybermites" Even worth having as a Boss?

I feel "Clever Villagers" make far more sense and as a basic mob that can be healed using a handpulse.

Check out this Cyberman Suggestion Post I made. I fully detail many variants of Cybermen, including my idea for "Clever Villagers"

https://swdteam.co.uk/forum?p=thread&tid=120

I love the skin by the way