just so you know, the one we know about is this man
William Joyce replaced Mittler in 1939. Joyce was American-born and raised in Ireland and as a teenager he was an informant to the British forces about the IRA rebels during the Anglo-Irish War. He was also a senior member of the British Union of Fascists and fled England when tipped off about his planned internment on 26 August 1939. In February 1940, the BBC noted that the Lord Haw-Haw of the early war days (possibly Mittler) was now rarely heard on the air and had been replaced by a new spokesman. Joyce was the main German broadcaster in English for most of the war, and became a naturalised German citizen; he is usually regarded as Lord Haw-Haw, even though he was probably not the person to whom the term originally referred. He had a peculiar hybrid accent that was not of the conventional upper class variety. His distinctive pronunciation of "Jairmany calling, Jairmany calling", which could be described as a "nasal drawl", may have been the result of a fight as a schoolboy that left him with a broken nose.[17]
Joyce, initially an anonymous broadcaster like the others, eventually revealed his real name to his listeners. The Germans actually capitalized on the fame of the Lord Haw-Haw nickname and came to announce him as "William Joyce, otherwise known as Lord Haw-Haw".[1]