Supreme Dalek (The Curse of Davros)

A Supreme Dalek was loyal to Davros was present in the Battle of Waterloo in 1815 to help Napoléon Bonaparte win the battle. As a punishment it increase its brain electro-stimulation by a factor of ten. (AUDIO: The Curse of Davros)

Behind the scenes
Ironically Davros disliked the Supreme Dalek and this Supreme Dalek served him.