It was all in the main character's mind!
- Think about it. Dr. Bob's nemesis may very well be the main guy you start out with, but going through some horrible LSD trip, thanks to the doctor. Only til the end does the game get close to resembling something of logic, and on the way there, he was on the path to the castle, but also preparing himself for the battle (after all, he can punch metal without hurting himself, and can respawn in a moment after his death with a bunch of flying skulls).
