Exterminate!

This Dalek keycap is compatible with Cherry Mx key switches.

I printed mine at a 1.2mm layer height without any print supports.

If you'd like to do a colour change at a layer height; you can start the Dalek's colour at 8.8mm (it's final height is 9.2mm).  Just ensure that you check your layer changes in preview mode first.

Note:  the sample I printed was done with a 0.4mm nozzle.  I think some of the details might come out a bit better with a smaller nozzle and a fine tuned profile.