Spoilers ahead in case you don't wanna be spoiled for Kung fu panda 4.
Meet the new dragon warrior~ Zhen the fox.
And OOH boy does everyone have some sharp words for this idea. But I am here to have a look and share some of my theories on why Zhen was picked.
Quick opinion on the movie since it can't be helped. I really enjoyed it. True it didn't have much of the depth as the first two but it does have a lot of heart, the best description I heard, its this reason I enjoyed it more then the third movie.
Now that I successfully pissed some readers off we can continue. Cause I'm looking into the possibilities of why the dragon warriors have been odd selections, and why both tigress and tai lung weren't chosen to be the dragon warrior despite whether or not they were worthy of being this legendary warrior.
The main argument is in fact the next dragon warrior should be tigress and tai lung since they were cheated out of the title and that po just met Zhen for like eh, 3 days at most. But hey, I'mma tell those folks something. Po was also picked off the streets to be the dragon warrior and had to be trained by shifu in a small time. The choosing of Zhen was no different, only difference is that Po got to know Zhen before the choice.
That said, I wondered why is the dragon warrior such as difficult spot to gain? In the first movie we get info of the dragon warrior, a prophet warrior to protect the valley. Not one managed to claim the title. Not shifu, not tigress, and not tai lung. We're not sure if Oogwai was the first dragon warrior before po but it was the turtle who made the scroll and said it had the secret to becoming an unstoppable warrior.
Shifu had trained Tai lung to be the warrior but Oogwai denied him for having darkness in his heart, then chose Po despite the 5 skilled warrior. He was about to select Tigress before po landed in front but this is not the case. Oogwai felt Po's presence at the tournament, po was flying over the gate at the time when tigress was set to preform, this is why he stopped the tournament. You can see Tigress with a confused expression when he does this. Its cause she didn't even get started.
This is why I believe not even Tigress was meant to be the dragon warrior, but why? Why spend so many years waiting only to select some random panda? Why wasn't any other strong warrior selected. I believe the answer is very simple. What do we know of the dragon warrior? Tigress said this,
"It is said that the dragon warrior can spend months at a time eating nothing but the dew off of a single ginko leaf and the energy of the universe."
What? What kind of mad magic does that mean? Sure the kung fu is pretty exaggerated in the panda universe but even the most strongest warriors needed to have a little bit of food when not in mediation. Its also agreed that the dragon warrior is the strongest. And lastly, why is it called the dragon warrior to begin with?
Because the dragon warrior...was an actual dragon.
Meet the first dragon warrior
This is a character from the paws of destiny. I don't know how Canon the side projects are but in the series paws of destiny we meet Jindao the figure behind the legend. In the series its said that Jindao protected the valley of piece. In Kung fu panda there are only counted 3 dragons so far, 2 in the paws of destiny and 1 in the TV show. Two out of the three were evil. Can you guess which one was among those evil dragons? Yup, Jindao.
For whatever reason Jindao was corrupted by the hero's chi and got power hungry but it was clear that during his defeat Jindao was very powerful. The very ones who defeated him won but just barely. Despite wrong doings here we are, 1000 years later Oogway, yes he's that old, foresaw a hero taking the place of the dragon warrior and training with the hero's chi. Yet he didn't know who it would be.
With all the information laid out, let's see why Zhen and Po are the true animals to recieve the title. For Po, Oogway saw the balance of the universe in Po, his true successor. Po was perfect. Yet no one believed this and thought in order to be the dragon warrior, you needed to be a warrior. This is why Shifu trained tai lung and the 5 so harshly. Po isn't who you'd think would be perfect, borrowing information from Mat pat, he explained the dragon style of kung fu practices all 5 animal styles. (Correct me is I'm wrong) Po was a fanboy of all five so he was on his way to learning the dragon style of kung fu. Po was also very lax nature, had a free spirit and so much heart that Oogway knew Po wouldn't follow the same fate as Jindao.
Zhen, we finally get to Zhen, heh, is a grey fox. Originally a thief and an apprentice to "the chameleon~" someone you wouldn't guess would be the next dragon warrior. The animal that everyone things was picked too fast but again Po was selected in seconds compared to the 5. Their feelings of being jibbed was how audience felt. Shifu again selected more bigger, stronger and skilled warriors to be the dragon warrior. Not the furious five. They had their own stories going on. Po was unwilling to give up the title but I think those candidates would have been a terrible choice, cause the dragon warrior needs to also be humble enough to not fall to the allure of the hero chi. Sure, Zhen's a thief but is she a bad person? No, she isn't. She is a morally grey character next to a black and white one. I believe Zhen was chosen because she can have this understanding of the world. An understanding that some people aren't always who they seem to be. An open heart. This is what everyone else was missing. I'm not saying tigress didn't have heart, she does and I'm not saying tai lung didn't deserve to be the dragon warrior. But if all you needed was skill, you worked for it and you deserved it then by that same logic then Shifu should have been considered.
So why do I believe Zhen was chosen? I believe she was picked because she always had the heart, she has the potential to learn great kung fu, (notice how while she has some skill in combat she isn't probably trained, she then started being trained by the furious 5 and po. Remember the dragon style is the 5 animal styles into one), Zhen also defied someone already on the evil side. and I think po also had...a vision. If you recall Po was beginning to get visions just like Oogway when he foresaw Tai lung returning and the success Po would accomplish. Po had a vision of the chameleon's true plans of world domination. Perhaps Po also saw something similar to what Oogway saw in himself, that Zhen can accomplish great things as the dragon warrior. Someone to follow the steps of po instead of turning into another monster like Jindao.
But this is what I believe, why do you think Po was chosen? And don't write, the creators got lazy, but that count they could have gone. Oh, Monket is next dragon warrior. Movie done.