Theory Numero tres: Lex Loath will appear as a minor antagonist, bringing Glyde with him.
The reason: It would be hilarious to see him try to trick the Casketts into taking a loan, only to be foiled by the Bonnes who recognoze him and promptly lay a smackdown on the poor needle nose.
Story: Lex Loath, who had just escaped from jail, learns of the plan to get MegaMan off Elysium. Naturally, he believes that it would never work, but he decides to attempt to loan the Casketts a huge amount of money in hopes of being able to force them into working for him. Of course, the Bonnes recognize him when they catch him attempting to convince Barrel into agreeing to the loan. You can pretty much guess what happens.
Here's a hint: Freshly constructed electric catfish to the rescue!