Glorificus from that show from that very problematic filmmaker known as Buffy the Vampire Slayer. Okay in that series Glory seemed unstoppable specifically because her main rivals was a vampire slayer, vampires and humans. Not exactly the hardest of opponents for someone like her to overcome. So Glory is going to have a proper challenge from other actual gods and titans from the movie Immortals.
Now this movie came to my attention over a decade ago when Luke Evans' Zeus was involved in a tournment that I participated. Now in the tournament people were sure how durbale the gods were, but they didn't seem too durable based off their fight with the titans. However after watching the movie, which by the way is free to watch on the free streaming site Tubi, there were things clearly originally missed.
https://tubitv.com/movies/100043686/immortals1) The narrator of the story of the gods at the beginning of the film (which is actually Zeus in disguise as John Heard), states that both gods and titans thought they were unkillable immortals until they fought against each other. Which would more imply some sort of immortality negation the gods and titans have instead of just brute force the end battle implies.
2) The film also makes a big emphasis how the Epirus bow is a weapon that allows mortals to kill both gods and titans. Which again that wouldn't be a thing if you can just stab and kill the immortals as easy as the end battle might lead some to believe.
3) We actually see straight up Kellan Lutz Poseidan jumping from Mount Olympus all the way to the ocean which would be a good showing of durability.
4) Even more impressive, when Ares comes down to save the human characters, he looked to have actually just jumped down from Mount Olympus like what Poseidan did. It doesn't appear like he ported down as the beam affect is more noticeable while Ares appears like he just dropped from the sky.
5) Most impressive, and something that can be easily overlooked. When the gods were forced to flee Mount Tartarus, Zeus collapses the mountain and it's clearly a large mountain as it shows many shots from the outside. The part that's overlooked is the final scene when Theseus's son sees visions of the future and sees the war in the heavens gets a round 2. That means all the titans who were at the bottom of Mount Tartarus all survived that mountain falling on them! I think it's safe say the gods and titans have roughly the same immortality levels, so we can apply it to both.
So these are definitely some examples of high end durability/immortality. Anyways Glory face off against the gods and titans in seperate matches.
round 1) Glory
vs
a titan fresh out of it's cell
round 2) Glory vs a titan at full power
Now this one is debateable, but there's evidence the titans were in a weakened state during the Mount Tartarus fight (likely due to being dormant for 1000 years) because when you see the titans fighting the gods in the heavens round 2, you see not only are the titans doing much better in 1 vs 1 combat against the gods, but you can even see both Poseiden and Zeus in that fight if you look closely, and even against them a single titan is holding their own pretty well against them in 1 vs 1.
round 3) Glory vs Ares
round 4) Glory vs Zeus
If people needs videos of these scenes, I'll gladly post them. Who wins which fights?