I did a Dr Who mod and put him on the Immortus base
To me it is the most obvious choice

I'd love to do all of the Doctors with some sort of trait for regeneration and powers based on their situations. So the first two Doctors might have some sort of random thing for where they start to represent their inability to control the TARDIS. Maybe the Third Doctor has Earthbound but also gets close combat expert for his Venusian Aikido. The Fourth Doctor gets a longer dial to represent being the longest lasting Doctor. Five gets a variation on outwit to represent losing the sonic screwdriver. Six can impose battle fury. Seven gets a special empowering ability for Ace. etc.