Jemorrile

I was struck with the random thought that Jemorrile the Exile is very much similar to Invader Zim. I wonder if any ideas from the latter could be altered to fit the former. Not to say that the guy should be relegated to a comic relief status (imagine a projected image of Jem in Sum of All going "I'm in a bear suit"), but you have to agree that their situations are almost identical. So, anyway, I was wondering if there's any information on Jemorrile outside of Uncaged - Faces of Sigil.