Goof: When Heinrich reveals his plans to the KND in Operation C.A.R.A.M.E.L., Numbuh 4's hooded sweatshirt is briefly colored its regular orange after it was changed to pink.
Numbuh 2: Peanut butter bowling balls.
Numbuh 5: Caramel for the nice lady (give Numbuh 3 the caramel to break the curse).
Numbuh 3: Ew! That's been on the floor!
Numbuh 5: Please! With the taking and the eating and that would be nice.
Numbuh 2: Hey, Numbuh 5, who's your friend? Ooh, what a fox!
(revealing that Heinrich is a girl)
Numbuh 5: This is Henrietta Von Marzipan. She's an old friend of mine.
(Numbuhs 1, 2, 3 and 5 are watching the Apollo moon landing in the treehouse, on the TV)
Neil Armstrong: Very, very fine grained as you get close to it. I'm going to step off the lunar module now.
(Numbuhs 1, 2, 3 and 5 laughing hysterically)
Numbuh 2: Shh! shh!
(Numbuhs 1, 3 and 5 still laughing)
Numbuh 2: I love this part!
Armstrong: That's one small step for man, one giant leap for mankind.
(The KND burst up laughing again. Numbuh 1 holds his stomach, laughs hard, then wipes his eye)
Numbuh 1: Oh, that never gets old!
(Numbuh 1 straightens, then listens)
Brad Punchbeef: (Reporting) That was footage from the famous Apollo moon landing. And to celebrate that historic event's anniversary, The National Space Agency has announced a plan to.....
(Numbuhs 2 and 3, sitting across from each other, take big sips of their water)
Brad: ......boldly return to the moon...next week! (Numbuhs 2 and 3 spew their water at each other)
Second time Numbuh 4's dad's face is shown and first time his mom's face is fully shown.
This is the final appearance of Heinrich, who was originally a girl named Henrietta von Marzipan.
KND members' most valued qualities:
Numbuh 1 - Leadership
Numbuh 2 - Intelligence
Numbuh 3 - Cheerfulness
Numbuh 4 - Courage
Numbuh 5 - Coolness
Operation: C.A.R.A.M.E.L. is a Numbuh 5 episode.
Operation: M.O.O.N. is a Numbuh 4 episode.
Operation: C.A.R.A.M.E.L. stands for - Candies Are Really Altering Many Extraordinary Lives
Operation: M.O.O.N. stands for - Moving Out Of Neighborhood
The Beatles family appears in Operation M.O.O.N.
Operation C.A.R.A.M.E.L. reveals the origin of Heinrich Von Marzipan and his relationship with Numbuh 5, and details "The Guatemala Incident".
Truman Show: Operation M.O.O.N. was set up like the movie The Truman show starring Jim Carrey From the fake set down to Numbah 1's hat.
The trap that Heinrich did and the explanation and plan is similar to "Fullmetal Alchemist."