The most eye catching feature in the Elden Ring landscape is a fairly obvious reference to this Nordic tree of legend
Yggdrasil
Namor Ult Voicelines
[Horn Sound]
"I bequeef-"
"I bequeath to you this ring"
-Melina
This endgame Elden Ring boss is consistently likened to the Valkyries of Norse mythology- albiet with a colourful prefix
Malenia, the Scarlet Valkyrie
Gambit's Team Ult Voiceline
"A winnin hand"
"THE GAY"
"The gates! Open the Gates!"
-Gostoc
This coiled boss is an homage to Jörmungandr, the world serpent
Rykard/The God Devouring Serpent
Cyclops Team Ult Voiceline
"Optic Fury!"
"THE MOOOOO"
"THE MOON HAUNTS YOU"
-Moon Knight
Many have likened Radagon to Loki of Norse mythology. Assuming this to be correct, this boss would be his child, not simply his pet
Red Wolf of Radagon
Mr Fantastic Team Ult Voiceline
"Haha, Problem Solved"
"Thy Strength BEEF-"
"Thy strength befits a crown"
-Hoarah Loux
The sword wielded by Sekiro's Wolf, named the Kusabimaru, is an homage to this legendary Japanese sword
The Kusanagi-no-Tsurugi, meaning "Grass-Cutter"
Blade Team Ult Voiceline
"Still got an edge"
"....."
"....."
-Goldmask