Bannakaffalatta
Bannakaffalatta was a cyborg Zocci aboard the Titanic. He had an accident sometime ago, as a result of which he underwent conversion into a cyborg, for which he experienced some shame. Bannakaffalatta disapproved of shortened versions of his name.
Onboard the Titanic he met the Doctor and briefly strolled around London on Christmas Eve on a tour led by Mr Cooper. As Bannakaffalatta was small he was able to get through spaces others couldn't. He revealed his cybernetics to Astrid, to whom he took a fancy and asked on a date. (She accepted.) Over a short period of time, he grew to accept his nature as a cyborg. While traveling over the bridge in the Titanic, Bannakaffalatta got across with ease but when the Hosts descended he uses=d his cybernetic body to let out an electromagnetic pulse to destroy them and give the Doctor and the others time to escape. He also destroyed himself and so died a hero. (DW: Voyage of the Damned)