All spoilers are unmarked.
- The jade zombies, aka "jombies". They're basically shells created by Kai of former Masters that he uses as his eyes and ears, and they are Uncanny Valley personified by looking like not-quite-right jade statues of fallen fighters and moving in a jerky, twitchy unnatural way. Even worse is how Kai can speak and see through the jombies.
- When Po realizes one of the jombies they're fighting is Master Porcupine, it can be pretty unsettling to hear Monkey say "I thought he died a hundred years ago!" An unsettling omen for the five as to what opponent they're dealing with.
- Tigress punches one, and it actually hurt her wrist. Keep in mind, the previous movie had her state that she had trained to the point where her nerves no longer feel pain from her own punches. That speaks volumes for how tough they are.
- Kai himself. While he has some comical traits, he's terrifying and at some points comes off as something out of a slasher movie. Unlike Tai Lung (who was shown to have once been a noble warrior before becoming the Fallen Hero we see in the film proper) or Lord Shen (who is much more openly monstrous but still had some minor sympathetic qualities with his pain over how his parents turned against him and his Pet the Dog moments towards the Soothsayer), Kai is simply a power-hungry devil whose only redeeming quality- his friendship with Oogway- is one that he himself has long abandoned. Heck, the fact that Oogway- for the only time in the trilogy- lets out a horrified "No!" upon realizing Kai's plan is enough to sell how monstrous this guy is.
- To emphasize how twisted his sense of morality is, Kai tirelessly carries Oogway for days to find someone who can heal him after he is injured. When he finally finds the pandas and they restore his best friend to health, how does he respond? By immediately turning on them and trying to steal their chi. 500 years later, he still has no idea why Oogway took issue with this.
- What Kai did to achieve the level of power he had; defeating and stealing the chi of deceased Kung Fu masters in the Spirit Realm. All of these victims had lived their lives and passed on...only to run afoul with a demonic beast like Kai in the afterlife.
- A brief Easter Egg from the beginning of the film. Pause at the right moment and look at the collection of jade pendants on Kai's belt. Now, think back to the first film's main antagonist. Yes, even the most hardened of Po's foes (like Tai Lung) stood no chance against Kai.
- Shortly after Kai escaped the afterlife he managed to steal the chi of every Kung Fu Master in China except for Po and his friends and would have been pretty much invincible if he stole chi of the survivors.
- The buildup to Kai's arrival in the mortal realm features some pretty sinister music as he travels through the heavens before doing so.
- There's something disturbing about Crane screaming in slow-motion when Kai blasts him back with a chi-infused Finger Poke of Doom.
- The way Kai steals chi is incredibly creepy. In that first he dominates his victims with pure physical might then pulls a You Will Not Evade Me with his chains in case a victim tries to flee. As seen with Shifu, the process of being broken down and turned into an amulet using chi is rather painful and you end up used as a mindless puppet afterwards to add to the horror.
- Kai arrives at the Jade Palace, surrounded by a growing, green storm of evil chi. When he finally appears personally, he slowly lumbers the Palace warriors, glaring intensely, swinging his weapons and scraping them on the ground. He does lose a bit of the tension once he speaks, and cracks a joke about Oogway's statue, but it's one hell of an entrance.
- Kai obliterating the Jade Palace with Oogway's statue wrapped in his chains, where it swipes off a chunk of the Jade Palace, which collapses. The statue bounces down the stone stairs, then the detached head lands at square.
- Then Kai gloating to Shifu before capturing him. All the while Tigress can only hide behind and watch helplessly.
Shifu: Oogway, forgive me.
Kai: (holds up his Oogway pendant) What do you say, Oogway? Do you forgive him?
Shifu: You may have destroyed the Jade Palace, but you will never succeed. There will always be someone to stop you!
Kai: Who? The panda? His chi is strong, but...it won't be enough. He will meet the same fate as you.
Shifu: No!
Kai: And so will every panda in that village! (transforms Shifu into a jade pendant and sucks him in).- The total Mood Whiplash when a beaten down Tigress makes it to the Panda Village, and warns that Kai has destroyed everything and everyone, and the Panda Village is next. Even after Oogway's attempts to Un-person Kai, he has fully reestablished himself as The Dreaded.
Tigress: And now he's on his way....He's after you, Po....He's after all pandas.*the pandas flinch in horror*- Towards the end of the film, the Panda Village stops and looks up as they hear distant scraping sounds. As the sky darkens and begins to turn green, Tigress stops what she's doing and looks resigned to their fate, and knows what the scraping means: Kai has arrived.
- The Wuxi Finger Hold itself. Knowing from this movie that it's an instant, certain one-way trip to the Spirit Realm, it's no wonder characters were terrified of it.
- When it's time for Po to take on Kai, Po does fairly well at first, but when Kai reabsorbs the chi, causing Po to lose his balance, he managed to land a hit on Po that sends him through a gate, destroying it. As soon as he gets to his feet, the first thing he can say to those nearby is a terrified "RUN!"
- Kai's final demise. Kai was a spirit warrior and therefore in someway undead, not saying he didn't have it coming, but when Po overloaded him with chi...he didn't just kill Kai...he obliterated him from existence itself.
- While it's over quick, the POV shot of Oogway in the flashback where he gets hit by a Rain of Arrows. It's terrifying.
