I'm tempted to use "retired multi-billionaire" and "villainous eccentric" as professions, unless anyone else has other ideas. - Dap00 21:17, February 18, 2013 (UTC)
I'd go with "Retired Businessman" and "Hobbyist Villain". 'multi-billionaire' is not strictly speaking a profession. Although I'll point out that "Businessman" was never mentioned, it seems reasonable enough to not be taken as "interpretation".
Also, I agree that much of the Trivia needed clearing out to appropriate areas, and the lack of appearing in ASiT is something *none* of those who did not appear in the episode needs to address. Anything about it is speculation and borders fan-fic. That is something which needs to be combed out of the wiki in general. After all, we don't offer such speculation about why *anyone* doesn't appear in any of the episodes in which they don't appear.