Out of Focus: Louis Prima's widow was unhappy with Jim Cummings' unpermitted likeness to her husband in TaleSpin and Jungle Cubs and threatened a lawsuit. As such Louie was omitted from the sequel, and limited to sparse silent cameos elsewhere to appease this.
Voiced by: J. Pat O'Malley (The Jungle Book), Jim Cummings (The Jungle Book 2), Rob Paulsen, Stephen Furst (Jungle Cubs)
Colonel Badass: The Disney movie turns him into the Colonel of a pack of elephants.
Disney Villain Death: Averted in the original film, in which he flees after his tail is tied to a burning branch, and subverted in the sequel, as he survives the fall AND the tiger statue head falling on him.
The Dreaded: Everyone and their mother is afraid of him. Well, not everyone, but those who aren't...
Genius Bruiser: A vicious and bloodthirsty, yet also intelligent and Affably Evil tiger. This is displayed even moreso in the book when he manipulates the wolves into becoming his minions and turning against Mowgli and Akela.
Joker Immunity: A rare example of a Disney movie Big Bad having this. He not only survives both films, but every Disney adaptation in general.
Kill All Humans: He hunts down and kills humans who enter his jungle due to his hatred of them.
Knight of Cerebus: As Affably Evil as he is, his appearance in the original film stops much of the fun and silly mood and makes things more tense and dark. This is carried Up to Eleven where he's concerned in the sequel.
No Sell: Kaa's hypnosis doesn't affect him. Whether's he's naturally immune or just makes sure to break eye contact before any damage is done is not clear.
Roar Before Beating: His first pounce towards Mowgli is accompanied by a Mighty Roar. Justified because he's not trying to conserve his strength or be sneaky, and has gotten so incensed by Mowgli's defiance that he clearly wants to scare him. It works.
Averted in his opening scene; he stalks a deer in total silence (like a real tiger) rather than loudly charging it, suggesting that he's happy to rely on stealth when he's hunting to eat rather than to satisfy his personal enmity with humans.
Sissy Villain: Downplayed. He's genuinely feared predators of the jungle (he's mentioned as being stronger than the entire wolf pack combined) however, his wrath is hidden in an amusingly flamboyant, playful and soft spoken demeanor.
Smug Snake: While much more dangerous than most examples of this trope (his fearsome reputation is fully justified,) his overconfidence is nonetheless his undoing; in both films he had many chances to kill Mowgli but decided to toy with him instead.
Spared by the Adaptation: He's Killed Off for Real at the end of the original book (though he appears in a flashback story in the sequel), yet he not only survives both animated Disney films, but every adaptation by Disney in general.
In an alternative ending (storyboarded for the Diamond Edition Blu-Ray), Shere Khan is killed by Mowgli after Mowgli accidentally pulls the trigger on a hunter's gun.
In the 2013 stage version, he does in fact burn to death after Mowgli accidentally sets him on fire.
Tranquil Fury: While his actual combat behaviour is that of The Berserker, he is very calm and collected before that times. Particularly pronounced in the sequel, where his slow-burning fury is palpable in every appearance.
Ultimate Evil: For much of the film he isn't seen or heard. We only hear and see from other characters that he's the most feared, dangerous creature in the jungle, and even the mention of his name often results in a more serious tone. Towards the end the tiger finally appears, and while he's Faux Affably Evil, he's every bit of the Badass he's hyped up to be, especially when he shows his true colors in the final fight. He gets more screentime in the sequel, where he's even more if a Knight of Cerebus.
Character Exaggeration: Kaa's incompetence and cowardliness are greatly exaggerated in the second movie to the point where he becomes something of a Butt Monkey, whereas in the first he was genuinely menacing yet constantly unsuccessful, and his general fear of Shere Khan (the same as everyone else) is exaggerated to not being able to form full sentences around him.
Not So Harmless: People tend to forget that despite Kaa's comical attitude and subservience to Shere Khan, he is considered a very legitimate threat by everyone in the jungle due to his hypnotic eyes, and almost succeeded in eating Mowgli alive twice.
And that's not even counting the sequel or the one Jungle Cubs Special.
In the original film he handily neutralized Baghera, who even cowers before him.
Villainous Rescue: He ends up hiding Mowgli from Shere Khan while the latter was looking to kill the man cub, although he did it for obviously selfish and nefarious reasons (he wanted to eat Mowgli for himself).