A credit card company in Free Country, USA. First mentioned in StrongBadEmail/credit card when Strong Bad forwards a scam email to Homestar Runner, signing it 'Superfied Credit Union'.

On the Downloads page, it is possible to see Lem Sportsinterviews' credit card from the Superfied Credit Union. On the back, it reads 'This is a magnificent card. Superfied Credit Union is THE NAME in magnificence. Of crads, at least. I mean cards.'

MarzipansAnsweringMachine/Version 10.2 has an Easter egg involving a call from Marzipan's credit card company. It is not stated whether this is Superfied Credit Union or not, but it is possible, maybe even likely that it is.