The Penny Scouts have a list of names, using a mix of money symbols as well as Latin and Cyrillic letters. One of them could be read as Balder, one of the Gods of Norse mythology (as well as being Shadow's legal first name in the Neil Gaiman stories).
The first time that Emily Browning doesn't appear. As of now, no character or actor has featured in every one.
The last episodic television role of William Sanderson, who retired in 2020.