On Wikipedia.org's entry on HIM, it gives the current line-up of the band and includes the name Jeremy Earliwine as the "duet vocalist." What the hell is that? Who is Jeremy Earliwine? I've never heard of this character and I can't find anything on him.
After many lineup changes, the band now consists of Valo, Linde, Migé, their 3rd Keyboardist Janne Johannes "Burton" Purttinen, their 2nd drummer Mika Kirstian "Gas" Karppinen, and their first ever duo vocalist Jeremy Earliwine.
Wikipedia is often opinionated and could just be misinformed. That could be the only answer.