* BrokenBase: The fans of TotallySpies didn't seem to like the "younger" group of spies.
* CrowningMomentOfHeartwarming: In the episode Sheena was introduced in, Marc has spent the entire episode trying and [[EpicFail failing]] to get her to notice him, even going as far as using a WOOHP gadget to alter his appearance, which also fails. Towards the end of the episode, Marc decides he's going to try one more time and plans on using the gadget again. Megan (who had been encouraging the entire time and [[YouAreBetterThanYouThinkYouAre trying to convince Marc that he didn't need to change to get Sheena to like him]]) begrudgingly approves but insists that Marc let ''her'' set his appearance. He agrees and for the rest of the scene, Marc's face is obscured. After Sheena says yes, Marc goes back over to his sister and tells her that whatever look she gave him sure worked. Megan holds up a mirror...[[JustTheWayYouAre and reveals she just set his looks back to normal.]]
--> Marc: ''No way...''
--> Megan: (affectionately) For a genius, you can be pretty dumb sometimes.
* {{Headscratchers}}: In 2 of the MissingEpisodes, someone (Trudi and Tami to be exact) [[BrainwashedAndCrazy are turned into spy-sassins]] by a gadget the Spiez had lying around that was issued by WOOHP...''why'' would you have something like that and in Trudi's case, ''why'' would they bring it home with them?
** In the episode that introduced Sherry, why in the world didn't Lee, Megan and Tony notice that Marc was acting ''brain-dead'' after his first session with her? Megan especially has no excuse given how close she and Marc are.
* MeaningfulName: Technical example; Marc's name is spelled the same way as the MARC system for library online catalogues. Given his position as TheSmartGuy, it's appropriate.
* LesYay: In "Operation Yeti Bear", Megan seems to be quite enamored with athletic prodigy Tara Prefontaine...
-->'''Megan:''' Wow! That is one fantastic girl!
** Megan and Tami [[http://www.youtube.com/watch?v=un9ASEA2frM occasionally engage in]] FoeYay as well.