#to be fair muspelheim's blades are basically hand-held death stars

[lightdancer1]

In terms of swords only two types of entities I write use the really big ones:

With the Urhalzantrani proportionally they're actually the same size as a regular sword but the entities in question have a mininum size to humanity of 25 feet tall (putting them on the scale of the 33 King Kong). So a proportionately scaled sword to one of those entities would read like a big damn claymore to a regular human and indeed the blades are too heavy to lift).

They don't need melee weaponry but it's a part of an aesthetics thing and a nifty means to add an extra wallop with a nice visual symbol and their ancestors *did* use swords, to boot, so they retain traces of who they were and what they were.

The other are the fire-giants of Muspelheim, who have the largest swords of anyone. Their blades are rune-adorned world-wrecking weapons of mass destruction that literally become blades of fire that can be aimed edge-down and explode entire planets from the mystic fire unleashing their nature and the nature of the most powerful sorcery at their disposal.

They can be used for combat and are with Gods, but as they're blades that are literally set on fire they crunch and leave cauterized wounds where they strike.