Top Ten Most Gruesome Ways Characters Died in the Marvel Cinematic Universe

Happens to: General Hale and Agent Kim in Agents of S.H.I.E.L.D.

There's a VERY GOOD REASON this is the #1 pick. Because all I can say about it is "wow". Using Hale as an example, Glenn Talbot with his gravity abilities lifts her up, and uses those telekinetic abilities to crumple her, even the blood gets crumpled. It's easily the most gruesome death in the MCU by far even though it came from a TV show.

Haven't seen agents of shield, fortunately, but that seems pretty gruesome.

Happens to: several Ravagers and Yondu in GOTG2, Ebony Maw in Infinity War, also almost happens to Star-Lord in GOTG1, Glenn Talbot in Agents of S.H.I.E.L.D.
Kind of obvious, but this one is a seriously slow death to make it even more painful. Remember that these deaths are supposedly the most painful ones out of all of them, and with this and the #1 pick they show that the person dying is conscious in their last few moments. It's probably even worse with this because we see them coldly drifting away and soon losing motor functions and everything.

Happens to: Stephanie Malick and Kirk Vogel in Agents of S.H.I.E.L.D. (maybe also anything to do with Extremis in Iron Man 3?)
I could just fill this entire list out with deaths from Agents of S.H.I.E.L.D. The insanity of this death comes in that the Hive entity enters the body and just melts the skin from the inside.

Happens to: Ultron Prime in Age of Ultron (his main body, another of his bodies does survive a bit later on before it is eradicated by Vision), Quan Chen in Agents of S.H.I.E.L.D.
At the climax of Age of Ultron, we see Wanda confronting Ultron after her brother died, and she said she died too and that it felt like having your heart ripped open. Saying this AS she actually rips out the core of Ultron Prime, ultimately destroying that body.

Happens to: Sunil Bakshi, Adamo Dioli, Noelle Walters, The Banker in Agents of S.H.I.E.L.D.
This bomb used by HYDRA is pretty darn insane, capable of petrifying and immediately disintegrating anything it affects.

Happens to: Vasily Karpov in Captain America: Civil War

This is truly a cruel death done by Zemo who invades Karpov's house to get Bucky's trigger words. He hangs the guy upside down at a sink and leaves it running, which will eventually slowly drown Karpov.

Happens to: Jackson Brice in Spiderman: Homecoming; Santino Noguera, Lucy Bauer, Eli Morrow, Hugo, Fredrick, Vincent, AIDA, Daisy Johnson's Quake from Agents of S.H.I.E.L.D.
Wow, lots of this, but basically the gist is being burned alive and flat out disintegrating into nothing. Quick and terrifying. Most of these seem to happen with Ghost Rider too.

Happens to: Phil Coulson in Avengers, Zuri in Black Panther, The Warriors Three, several Asgardian warriors, and Skurge in Thor: Ragnarok, Doctor Strange in Doctor Strange (multiple times but reversed), Heimdall and Corvus Glaive in Infinity War, several characters in Agents of S.H.I.E.L.D.
This is perhaps the most common death in the series, and oddly enough is usually bloodless each time. But in many cases, especially the Warriors Three and Doctor Strange, they get outright impaled with the most extreme prejudice.