Modder Garden Of Eyes, who's work on games such as Bloodborne was featured on Elden Ring Runes this site previously, is now exploring Elden Ring's archives and playing around with things.
The result? Bosses fighting bosses with no human characters and the resulting frustration in sight. This is something that Garden of Eyes has a vast amount of experience with. their Patreon was set up specifically to produce this type of content. They've posted videos similar to this one, with the boss in Dark Souls 3 fighting a boss from Bloodborne.
In Elden Ring, though, they've picked two bosses that you might want to meet in this situation: Malenia, star of the trailer for the game, and Starscourge Radahn who is the official Elden Ring's most popular character.
They're not the most fluid and beautiful of fight scenes, aside from the charming small intros, but it's not really the point. It's fascinating to buy Elden Ring Runes see each character's AI fighting against something that's not well, you.