Here is something from the Interwebs
"Nicodemus could possibly be a reference to Saint Nicodemus[Footnote 4] from the Bible, who helped wrap Jesus in the Shroud of Turin. It's unknown whether the two are the same person, or if it's just a coincidence. Archleone means something similar to 'roaring lion', as described in: "the devil, as a roaring lion, walketh about, seeking whom he may devour."[Footnote 5]Archleone enjoyed this description when Dresden mentioned it."
The meaning of Nicodemus is Victory Of The People or, slightly more sinister; Victory Over The People
I think it was a brilliant decision to name him Nicodemus... What is his goal? victor for the people, or over the people? His daughter said he wanted to save the world... What did she really mean by that What is his idea of saving the world?