In Toy Story 3, a great number of the toys have been sold, broken or lost in the time period between 2 and 3 making for a Darker and Edgier feel. Especially saddening is the absence of Bo Peep, Woody's love interest — when she is mentioned, Woody looks utterly miserable. Ultimately averted as Toy Story 4 reveals she's okay; she was simply given away and ultimately became a lost toy.
In the first film, Lord Farquaad has a pretty mundane death, he is simply eaten by Dragon.
In the second film, Fairy Godmother dies very abruptly too, in one second she's being a very threatening villain just about to kill Shrek, but then King Harold's armor reflects back her spell, which kills her in an instant and every character forgets she was even in the scene.
Happens again in Shrek the Third, Prince Charming just has a piece of scenery from the stage production he's running fall on top of him (pushed by the same dragon who killed Farquaad).
Sir Lionel in Quest for Camelot. You'd think a death of the father of our heroine would be a bit more spectacular. But he gets whacked in the head with Ruber's rock-hard mace as they try to fend him off. It isn't dramatic either. Ruber flees at the end of the scene and then they notice Sir Lionel is dead.
Subverted with Rex, King, Boss, and Duke in Isle of Dogs. It looks like they were fed unceremoniously into a trash incinerator, but they show up later in the movie perfectly fine. It turns out that the incinerator wasn't working right, so the four dogs were able to escape unscathed, albeit covered in soot.
While many of the deaths in Justice League Dark: Apokolips War are very brutal , some are made more mundane, such as how Lady Shiva died when she's ambushed by a regular sniper.
The Transformers: The Movie is largely infamous for this: while Optimus, Megatron, and Starscream all get relatively climactic fates (Prime getting a Heroic Sacrifice, Megatron being reborn, and Starscream's treachery finally catching up to him), pretty much everyone else dies like a common Red Shirt, often to attacks that wouldn't have done that much to them in the show. Several of them simply show up mortally wounded or dead, their injuries having happened offscreen. Special mention goes to Brawn—there was a tongue-in-cheek theory for years that he'd secretly survived, given that his prior characterization was basically "the near-indestructible Pint-Sized Powerhouse," and yet he went down to a single shot from Megatron.
