I wrote Cass a couple times, just brief cameos. I did a poor job the first time based on the research I was sent and it’s bugged me ever since. The second time was better. Steph, I think I had only a small cameo. All these appearances were in Bop, and were short enough that I wouldn’t call them guest appearances, sadly.
I would kill to write Cass again and do it right, in particular.