These two secret characters are pretty elusive, and it was many many years after buying the game that I found out they really did exist. And so even more many years later, I figured I'd slap a clip up on Youtube. Also a rare glitch at the end that happens when you try to fight Naden but get into a schedueled boss fight instead.
RIP headphone users. You have been warned.
Edit: Sorry about the glitchy shit that happens when fighting Rack. No idea why that happened.