One, as pointed out earlier, is the Cast Section for Invasion only, with the characters from the storyline listed in order of appearance. Much easier to find any of the characters in there than in the main ROCR cast section.
The other is the Fan Art Section. I’ve not been having a great week, and one thing that always cheers me up is seeing my characters drawn by other people. So if you’re feeling inspired, even if you’re not a particularly skilled artist (but also if you are! Because there are a lot of people out there who can draw my characters at least as well as me), why not have a go at drawing or painting or photomanipulating one of the characters from Invasion? The "submit" button merely opens an email window, so I might as well make it easy for you and mention that you can send art to email@example.com. (I just noticed that it was set up to send mail to an address I haven’t used in over a year, so far all I know, people have been trying to send me fan art through my WCN site for months…. but probably not.) I’d especially like to hear from people involved in the Crossover Wars as several of them are or will be drawing my characters anyway.