Cartoon series about post-apocalyptic world
I am looking for the name of an anime-ish, both in drawing and story-telling styles, cartoon (I am pretty sure it wasn't an anime) that aired somewhere between 2000 and 2010 in Nickelodeon, Cartoon Network or Fox Kids in Latin America (although I am pretty sure it was originally in English or French), of which I happened to watch maybe 3 or 4 episodes (maybe I hated, maybe it was mostly only these episodes?). Here is what I remember, although I am not certain of any of these details.
* A few years after an apocalyptic disaster that seemed to kill or mutate almost everyone and destroy pretty much everything (scenarios in the cartoon often showed destroyed buildings and cities), we follow a young woman with something between 1 and 3 companions.
* The woman was a non-muted human, while her companions were mutants / androids, and the main (only?) one was lionesque in appearance: by that, I mean he maybe had a lion face in place of its own face more or less like this, or maybe a lion face in his chest like this, or maybe just a mane-like hair with colors associated to lions, such as yellow and orange, like this. They seemed to have met her before the apocalypse when she was the daughter of an important politician or maybe scientist, but I don't think she remembered that (maybe she had been kept alive and well through the apocalypse in some kind of stasis?), and their (the companions) knowledge was only revealed through flashbacks: perhaps they were the woman's bodyguards, love interests, family or friends before the end of days?
* The point I am most certain about was a battle against a snake-like humanoid: by that I mean he was primarily green, maybe in one of his forms he had a snake head instead of a more anthropomorphic one, maybe in another form he had snake heads in lieu of hands, a little like this. 944
That fight lasted for 2 or 3 episodes and was filled with flashbacks points where the enemy changed form and evolved (very anime-esque); despite the companions almost dying several times, they triumphed in the end. This enemy seemed to also have some background with the woman, from before the apocalypse.
I know there are a lot of uncertainties in my description, but I tried my best to remember the plot. Hope it is enough!
P.S.: Despite a few similarities (such as the young woman, in a strange world, accompanied by three individuals, one lionesque, one perhaps an android) I do not think the show was based on The Wizard of Oz. The tone was far more serious and I can't remember parallels to the Scarecrow and <PERSON>... 167