To that person who asked about which bey avatars can do the unaliving, thank you, now I have the balls to send an ask even if I'm anonymous.
Now let's get down to business (to defeat the Huns!) How much damage and how intense can spriggan, Valkyrie or hades can murder a person? Spriggan has the Big Axe™️, Valkyrie has the pointy, stabby sword and a big ass horse, and Hades, c'mon *gestures to the thing* It's hades.
Hades has been done {here}! As for the other two...
There are multiple different versions of both Spriggan and Valkyrie, some of which have significantly different anatomy than the original iterations, and thus different levels of unaliving potential, however, for post brevity I'm only going to speculate on the brutal mauling capabilities of their s1 versions here. [Feel free to ask for other seasons' variants in another ask though!]
That giant axe can both cleave you in half AND impale you because the ends are Stabby Pointy
Storm Spriggan is a being of both efficiency and mercy. You will be cleaved in half.
However, pretending for a moment that Storm Spriggan has somehow implausibly NOT elected to cleave you in half with that giant axe immediately...
Storm Spriggan has claws. Storm Spriggan can tear you open with its hands or kick you open with its feet.
Storm Spriggan has a mace on the end of its tail. Storm Spriggan can whip its tail into your skull and embed that mace in your brain.
Storm Spriggan can probably strangle you with that tail. It looks long and strong and flexible enough to be prehensile.
Storm Spriggan is incredibly buff. Storm Spriggan can simply grab your head in one hand and pop your skull like a crunchy grape. Storm Spriggan can rip you in half. Storm Spriggan can twist your entire body like a Twizzler.
Storm Spriggan can just step on you and crush you to death.
Storm Spriggan can break your bones over those plates of armor it has on its legs.
Storm Spriggan has that shield-gauntlet thing on one arm. Storm Spriggan can brain you with that thing by slamming the flat part into your head, OR it could eviscerate you with it by slicing the spiked edges across your gut.
That gauntlet thing also has those white spikes sticking out over Storm Spriggan's knuckles. If Storm Spriggan punches you with that hand, those mockup Wolverine claws will gouge into your flesh.
Storm Spriggan's horns and tusks seem very functional. You do not want to be bitten or headbutted by Storm Spriggan.
It sure is a good thing you have already been cleaved in half by the giant axe because all of these other Life Removing options sure do seem far more painful by virtue of being far less instantaneous than the axe.
Conclusion: You have been cleaved in half by a giant axe. Your corpse is split neatly down the middle into two pieces. You can even get an open casket funeral if the split was horizontal instead of vertical, even though that would have sucked way more because your brain didn't get turbofucked immediately! However, if the mercy of the axe has been wholly denied, what is left of you likely now resembles a large, smeared mass of abnormally runny strawberry jam. At least some of your teeth are probably still intact in there somewhere.
Death Brutality Scale: 9/10 because even if you've only been Quickly And Cleanly Bisected there are going to be SO many entrails everywhere.
You have been impaled by the stabby sword.
There are...a couple of different ways that stabby sword can be used to open your flesh, actually.
One edge appears to be somewhat serrated. The stabby sword will not leave a clean, smooth stab hole in your body. It will TEAR through your flesh. You can also theoretically be sawn open instead of sliced open by the stabby sword.
The other edge of the stabby sword has a bottle-opener-like hook on it. The bottle opener hook can be rammed into your eyesocket in order to crack open your skull like a nice Coors Light.
Even the bladed golden decorative piece on the hilt of the stabby sword can be brought down forcefully on the top of your head, killing you instantly.
However, assuming for a moment that the perfectly serviceable stabby sword has been eschewed in favour of more creative but less efficient methods of informing people that they may now refer to you in the past tense...
Victory Valkyrie can strangle or smother you with her cape.
Valkyrie can impale your entire body on the giant V emblem on her chest and wear your corpse as a fashionable accessory.
Victory Valkyrie is clad entirely in armor. Some of it is very pointy. Her striking you with any part of her body is going to break your bones at best and rip your flesh open at worst.
That horse of hers is also heavily armored. Particularly along its back. If the beast were to roll over on you, you would not simply suffer very many badly broken bones so much as you would be crushed into meat paste.
The horse has both very sturdy-looking horns and an armored head. You do not want to be headbutted by the horse. The horse can explode your sternum with its face.
The horse is a horse. The horse can simply kick every bone in your body into dust.
Conclusion: You are most definitely dead, but all is not lost! You have fallen in combat, and thus your soul has been honorably carted off to Valhalla by none other than the terrifying murderlady who removed it from your mortal body herself.
Death Honorability Scale: 10/10, you have been judged as worthy of being escorted out of the mortal realm by The Main Character's Spintop-Bound Brain Creature[s?]. You only get to die once, and you got to go out like this! Bravo!