- The Badges Isabella earns are called "Merit Patches"
- The organization agent P belongs to is called the O.W.C.A. (the Organization Without a Cool Acronym)
- Dr. D is from Gimmelshtump in the eastern European nation of Druseltein.
- Isabella's troop number is 46231
- Phineas, Ferb and Candace have had five pets
Goldie- A goldfish in the backyard aquarium.
Mr. Cutie Patootie- Candace's rogue agent named Dennis
Steve- A pet Chameleon who Jeremy accidentally enlarged.
Bucky- A dog they had before Perry who got sick and went to live on Kindly old man Simmons Farm.
- Doonkleberry is Phineas's favorite kind of pie.
- Jhonny is Vanessa's previous boyfriend.
- Meeps name is Mitch.
- Candace has dressed up or been a platypus twice.