Didi Dodo is a future agent.
With what organization she is going to be doing her spy stuff is unknown because since it hasn't happened yet, we have no idea and neither does she. But she does already have a calling card clearly announcing she is "Didi Dodo - Future Spy". It also says she is a licensed babysitter which really isn't important to this discussion but since she is telling us, I figured I would mention it.
Another important point to note is that Dodo is just that - she is a dodo. That is no aspersion against her. She is an actual living, breathing dodo, as in the bird which history tells us went extinct in the latter half of 17th Century. But that is obviously not the case here because she is out and about fighting crime - sort of - and practicing being the spy she knows she is meant to be.
We have no idea exactly how old Didi Dodo is - how does one tell on a dodo? She must be a grown-up dodo because she is going around doing all sorts of things with other grown-ups and not once does anyone say about her being too young to be doing these things. And the sorts of things she does is pretty grown-up-ish, like recovering stolen property from dastardly villains and fighting scary, dangerous robots and rescuing the Queen of the country.
And she does all that, mostly in the company of another member of the dodo species, Koko Dodo (I don't think they are related but ...). Kiki is the owner and operator of the highly prestigious Koko Dodo Cookie Company. In the first recorded adventure, our hero is out to help her in a very important matter. After that, the matter of why Koko is accompanying Didi is never really explained.
One last point to mention about Didi Dodo and her future spy work is that she does so dressed in a purple trenchcoat with matching purple slouch hat. And roller skates!